5,6-Diaza-8b-azoniaacenaphthylene, 4-[(8R)-8-[[[(4aS,7S)-1-amino-4a,5,6,7-tetrahydro-7-[(2S)-2-hydroxynonyl]-3-methyl-2H-pyrrolo[1,2-c]pyrimidin-8-ium-4-yl]carbonyl]oxy]nonyl]-1,2,2a,3,4,5,6,7,8,8a-decahydro-7-methyl-, (2aS,4R,7S,8aR)- AIDS-221603 AIDS221603