Nikkomycin J

N-[2-[(2R)-5α-(3,4-Dihydro-2,4-dioxopyrimidin-1(2H)-yl)tetrahydro-3β,4β-dihydroxyfuran-2α-yl]-N-[(3S,4S)-4-hydroxy-4-(5-hydroxypyridin-2-yl)-L-valyl]-L-glycyl]-L-glutamic acid