Michal,

What do you expect to get for the molecule from the CTAB? In the example
below, it does not have anything in the first line, which is the one that's
used to populate the _Name attribute.

-greg


On Tue, Apr 21, 2015 at 4:32 PM, Michał Nowotka <mmm...@gmail.com> wrote:

> Hi,
>
> Imagine I have two rdkit mol objects, one from SD and one from SMILES:
>
> import os
> import StringIO
> from rdkit.Chem import SDMolSupplier
> from rdkit.Chem import SmilesMolSupplier
> from rdkit.Chem import SmilesWriter
>
> mol = '''
>   MJ150413
>
>   6  6  0  0  0  0  0  0  0  0999 V2000
>     0.7144    1.2375    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>     1.4289    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>     1.4289   -0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>     0.7144   -0.4125    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>     0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>     0.0000    0.8250    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
>   1  2  2  0  0  0  0
>   2  3  1  0  0  0  0
>   3  4  2  0  0  0  0
>   4  5  1  0  0  0  0
>   5  6  2  0  0  0  0
>   1  6  1  0  0  0  0
> M  END
>  '''
>
> suppl = SDMolSupplier()
> suppl.SetData(mol)
> fromSD = suppl.next()
>
> suppl = SmilesMolSupplier()
> suppl.SetData('C', titleLine=False)
> fromSMILES = suppl.next()
>
>
> Now I want to convert them to SMILES. For the mol from SD, the
> identifier is missing:
>
> sio = StringIO.StringIO()
> w = SmilesWriter(sio, delimiter=' ', nameHeader='Name',
> includeHeader=True, isomericSmiles=False, kekuleSmiles=False)
> w.write(fromSD)
> w.flush()
> print sio.getvalue()
>
> >>> SMILES Name
> >>> c1ccccc1
>
> but for mol from SMILES it's fine:
>
> w.write(fromSMILES)
> w.flush()
> print sio.getvalue()
>
> >>> SMILES Name
> >>> c1ccccc1
> >>> C 1
>
>
> Is that a bug or an expected behavior? Is it possible to get
> identifiers for both mols?
>
>
> Kind regards,
>
> Michał Nowotka
>
>
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