virtual bool SweepConfs() = 0
Clean up unused memory and objects which may be associated with the
conformers of the OEMCMolBaseT. Renumber the conformer indices
sequentially. This function invalidates the conformer indices of all
conformers in a molecule. Note that this function doesn't guarantee that
all conformer indices are sequential upon completion (some molecule
implementations may treat OEMolBase::Sweep as a no-op).