Anthra[2,1,9-def:6,5,10-d'e'f′]diisoquinoline-1,3,8,10(2H,9H)-tetrone, 5,6,12,13-tetrakis[4-(1,1-dimethylethyl)phenoxy]-2,9-di-4-pyridinyl-

Anthra[2,1,9-def:6,5,10-d'e'f′]diisoquinoline-1,3,8,10(2H,9H)-tetrone, 5,6,12,13-tetrakis[4-(1,1-dimethylethyl)phenoxy]-2,9-di-4-pyridinyl-