OP7 op7 methyl [(1S)-1-cyclopentyl-2-({(2S,3S,5S)-5-[({[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl]oxy}carbonyl)amino]-3-hydroxy-1,6-diphenylhexan-2-yl}amino)-2-oxoethyl]carbamate OP7