Hi,

I have a question about RDKit/tautomers.

Let's say I have smiles input:

C[CH]2CCC(=O)C1=C(O)[CH](O)C[CH](O)[CH]12
C[CH]2CCC(O)=C1C(=O)[CH](O)C[CH](O)[CH]12

Now, if I make this code for each input:

m = Chem.MolFromSmiles(input)
inchi = Chem.rdinchi.MolToInchi(m)

I get different InChIs:

InChI=1S/C11H16O4/c1-5-2-3-6(12)10-9(5)7(13)4-8(14)11(10)15/h5,7-9,13-15H,2-4H2,1H3
InChI=1S/C11H16O4/c1-5-2-3-6(12)10-9(5)7(13)4-8(14)11(10)15/h5,7-9,12-14H,2-4H2,1H3

My question is why is it happening. Usually if I enter two tautomers - they 
have the same InChI (like it is supposed to be, according to the literature ). 
What is the difference in this example?

Thanks,
Benny

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