" 

 ::I know that PubChem/ChemSpider have wrong structures (well, they all have ..).  I do most by eye, so if the structure is incorrect, or too difficult, then I ignore it and move on.  Interesting problem.  Maybe we should consider to use the standard InChI and SMILES .. and update all the revids then accordingly.  I'm only not sure how to do that scripted (and doing these 11.000 all completely by hand is going to take .. ages, we do need some automation help).  Any ideas?  Could you provide lists which I could load into my script?     "