5,6-Diaza-8b-azoniaacenaphthylene, 8-[[[(1R)-6-[(2aR,4S,7R,8aS)-1,2,2a,3,4,5,6,7,8,8a-decahydro-7-methyl-5,6-diaza-8b-azoniaacenaphthylen-4-yl]-1-methylhexyl]oxy]carbonyl]-1,2,2a,3,4,5,6,8a-octahydro-7-methyl-4-nonyl-, (2aS,4R,8aS)- AIDS-221586 AIDS221586