5,6-Diaza-8b-azoniaacenaphthylene, 4-heptyl-8-[[[5-[(2aS,7S,8aR)-7-heptyl-1,2,2a,5,6,7,8,8a-octahydro-3-(methoxycarbonyl)-5,6-diaza-8b-azoniaacenaphthylen-4-yl]pentyl]oxy]carbonyl]-1,2,2a,3,4,5,6,8a-octahydro-7-methyl-, (2aR,4S,8aS)- AIDS-221594 AIDS221594