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virtual bool DeleteAtom(OEAtomBase *atm)
Delete an atom from a molecule. All bonds connected to the specified atom are also automatically deleted. Following an atom deletion, the specified OEAtomBase pointer, and the OEBondBase pointers of any incident bonds, are no longer valid and should not be used. The atom index associated with the atom, and the bond indices of any incident bonds, are no longer recognized by the OEMolBase, but the indices of all other atoms and bonds remain stable, and are unaffected by this call.
After deleting atoms or bonds, it may be necessary to call the
OEFindRingAtomsAndBonds and OEAssignAromaticFlags functions
to update the ``in ring'' and ``aromatic'' properties of the atoms and
bonds in the modified molecule.
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