L-Ornithinamide, N-[13-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)-1-oxo-2,5,8,11-tetraoxatridec-1-yl]-L-valyl-N5-(aminocarbonyl)-N-[4-[[[(4-nitrophenoxy)carbonyl]oxy]methyl]phenyl]- [ 1345681-54-0 ]