Bugs item #3106622, was opened at 2010-11-10 13:22
Message generated for change (Tracker Item Submitted) made by filipspl
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Category: Command-line Tools
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: filips (filipspl)
Assigned to: Nobody/Anonymous (nobody)
Summary: Proper smi - can conversion

Initial Comment:
For some structures, there is no conversion from smiles (smi) to canonical 
smiles (can), eg for curcumin:

> echo "OCC(=CC(=O)/C=C/c1ccc(c(c1)OC)O)/C=C/c1ccc(c(c1)OC)O" | babel -i smi -o 
> can -
OCC(=CC(=O)/C=C/c1ccc(c(c1)OC)O)/C=C/c1ccc(c(c1)OC)O

so it returns the same value. Otherwise if we convert the input smiles to mol 
with --gen3D and then to canonical smiles, the result is different:
OC/C(=C\C(=O)/C=C/c1ccc(c(c1)OC)O)/C=C/c1ccc(c(c1)OC)O

I think in all cases the result should be the same.

I've checked it in 2.3.0 as well as in 2.2.0

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