anchor.diff:  
   ### Retrieve list of molecules [GET]
   
  +Returned fields:
  +
  +* totalUnfiltered, total unpaged number of molecules without filtering
  +* total, total unpaged number of molecules with filtering applied
  +* rows, array of molecules, fields of a molecule:
  +** origin, name of molecule derived from input or db lookup
  +** smiles, inchi key
  +** mol, Molfile of molecule.
  +** reactionsequence, list of reactions
  +* scans, array of scans in which the filtered molecules have fragments 
  +
   + Response 200 (application/json)
   
           {
  
positive.code: When molecule is uploaded or drawn then they can be metabolized.
  
  Form fields:
  * metabolize, Can be true==1 or false==0
  * scenario, json array of object with type and steps keys. 
  
  
negative.code:                 "smiles": "MTOBWJUHQXQURZ", 
                  "probability": null, 
                  "molformula": "C6H6O4", 
                  "assigned": false, 
                  "reference": "<a href=\"http://www.genome.jp/dbget-bin/www_bget?cpd:C00682\" target=\"_blank\">C00682 (Kegg)</a>", 
                  "mol": "5280366\n  -OEChem-08091222412D\n\n 10  9  0     0  0  0  0  0  0999 V2000 ... abbreviated for readability\n", 
                  "reactionsequence": {}, 
                  "isquery": true, 
  