@property<EOL><INDENT>def rdkitmol(self):<DEDENT>
if self.__rdkitmol:<EOL><INDENT>return self.__rdkitmol<EOL><DEDENT>else:<EOL><INDENT>try:<EOL><INDENT>self.__rdkitmol = Chem.MolFromSmiles(self.smiles)<EOL>return self.__rdkitmol<EOL><DEDENT>except:<EOL><INDENT>return None<EOL><DEDENT><DEDENT>
r'''RDKit object of the chemical, without hydrogen. If RDKit is not
        available, holds None.

        For examples of what can be done with RDKit, see
        `their website <http://www.rdkit.org/docs/GettingStartedInPython.html>`_.