Synonyms: Platinum,[2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphinato(2-)-N21,N22,N23,N24]-,(SP-4-1)-; Platinum, [2,3,7,8,12,13,17,18-octaethylporphinato(2-)]- (8CI);21H,23H-Porphine, 2,3,7,8,12,13,17,18-octaethyl-, platinum complex;(2,3,7,8,12,13,17,18-Octaethylporphyrinato)platinum;2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphyrinplatinum; Platinum2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphine; Platinum2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphyrin; Platinum octaethylporphyrin;Platinum(2+) octaethylporphyrin; Platinum(II) octaethylporphyrin; PtOEP