22.1.2 OECreateCanSmiString

def MyWriteCanSmilesMolecule(pyfile, mol):
    OEFindRingAtomsAndBonds(mol)
    OEAssignAromaticFlags(mol)
    smiles = OECreateCanSmiString(mol)
    pyfile.write("%s %s\n" % (smiles, mol.GetTitle()))