((2,3,7,8,12,13,17,18)-Octaethylporphinato)copper (II) 14409-63-3 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine copper 2-Oep-Cu Copper, (2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphinato(2-)-N21,N22,N23,N24)-, (SP-4-1)-