Synonyms: 2,7,12,17-tetra(2-chlorophenyl)-21,22,23,24-tetraazapentacyclo[16.2.1.1~3,6~.1~8,11~.1~13,16~]tetracosa-1,3,5,7,9,11(23),12,14,16,18(21),19-undecaene;21H,23H-porphine, 5,10,15,20-tetrakis(2-chlorophenyl)-;5,10,15,20-Tetrakis(2-chlorophenyl)porphyrin