(2R,4aR,10bR)-7-amino-N-((2R,5S,10aS,10bS)-5-benzyl-10b-hydroxy-2-methyl-3,6-dioxooctahydro-2H-oxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl)-4-methyl-6-oxo-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinoline-2-carboxamide