(2S,3S,4S,5R,6S)-methyl-6-(2-(3-(((9H-fluoren-9yl)methoxy)carbonyl-amino)propanamido)-4-(((4-nitrophenoxy)carbonyloxy)methyl)phenoxy)-3,4,5-triacetoxy-tetrahydro-2H-pyran-2-carboxylate [ 894095-98-8 ]