2,2'-Bipyridyl{7,12-bis[1-(1,4,7,10-tetraoxaundecyl)ethyl]-3,8,13,17-tetramethylporphyrin-2,18-dipropionato}platinum (II)
2,2'-bipyridyl{7,12-bis[1-(1,4,7,10-tetraoxaundecyl)ethyl]-3,8,13,17-tetramethylporphyrin-2,18-dipropionato}platinum (ii)