3d image of corrin skeletal formula

corrin heterocyclic compound macrocycle vitamin b12 derivative core cobalamin chiral centres stereochemistry tautomer isomer stereoisomer coordination chemistry corrinoid cobalt ligand catalytic center porphyrin ring hemoglobin pyrrole-like porphyrins chlorophyll corroles aromatic octadehydrocorrins substance matter material component precursor synthesis reaction production building block molecule molecular formula skeletal structural structure geometry cell biology biochemistry biomolecule bioactive 3d