(a) Stereochemical Representation: InChI standardizes the representation of stereochemical information, including stereo centers and double bond geometries. This involves assigning stereochemistry descriptors such as "R" and "S" to chiral centers and specifying E/Z configurations for double bonds. By adhering to consistent stereochemical conventions, this ensures that the resulting InChI accurately reflects the three-dimensional arrangement of atoms in the molecule. Greater stereochemical complexity is one of the challenges that will have to be met for coordination and organometallic compounds.