void OEPerceiveBondOrders(OEMolBase &mol)
Attempts to determine bond orders from the 3D geometry and
connectivity of a molecule. If the connectivity is unspecified, the
OEDetermineConnectivity must be
called prior to this function.
This function invalidates the aromaticity flags of the molecule’s
atoms and bonds. If necessary, these aromaticity flags may either be
OEClearAromaticFlags or set
appropriately by calling
calling this function.