bool OE3DToInternalStereo(OEMolBase &mol)
Assigns the stereochemistry of molecule from its 3D coordinates. It perceives both the tetrahedral chirality around atomic centers, and the E/Z chirality around double bonds. This function is equivalent to the sequence of calling OE3DToAtomStereo and OE3DToBondStereo. However OE3DToBondStereo will not be called if OE3DToAtomStereo returns false.