Write a Python script that will parse PubChem to download all chemicals with given properties and run this script

There is a public website with all chemical compunds call PubChem: [login to view URL] We need to download information about all molecules with less than 11 atom. It can be done in the following way: 1. Use advanced search available on the website: [login to view URL] and search for the following string: ((0:10[HeavyAtomCount]) AND 0:0[TotalFormalCharge]) AND 0:0[IsotopeAtomCount] It will return the list of all compunds with less than 10 heavy atoms, but some of them are ionic compunds not molecules and some contain more than 10 atoms. 2. We need to sort the results by complexity 3. Then we need to check all the results and use two filters: Filter A: remove compounds with more than 10 atoms in Molecular Formula Filter B: remove compunds that contain a dot sign (".") in Canonical SMILES 4. All the components that are not removed by those filters should be collected in CSV text file that contains the following columns: * PubChem CID * Molecular Formula * Canonical SMILES * Molecular Weight * Chemical Names * IUPAC Name * If 2D structure XML file is presented (yes/no) * If 3D structure XML file is presented (yes/no) 5. For each compound that match our filters we should also download it 2D and 3D structures as XML files and place them in two folders. File names should be like "[login to view URL]" and "[login to view URL]" where 101826982 is PubChem CID of this compound The results: The results of this project should be A. A ZIP archive with many xml files with 2D and 3D structures of the and one [login to view URL] file. B. Python script(s) that generates this CSV file and download XML files Deadline for this project: August 24th, 2017, 13:00 London time ========================== For your information: PubChem supports API that makes this project much easier: REST Tutorial: [login to view URL] REST Documentation: [login to view URL] Other API documentation: [login to view URL] List of properties: [login to view URL] Example how to download needed properties of several substances: [login to view URL],129251212,5460638,5460696/property/MolecularFormula,MolecularWeight,CanonicalSMILES,Complexity,Charge,HeavyAtomCount,IsotopeAtomCount/XML Python wrapper for PubChem: [login to view URL]