Toluene-4-sulfonic acid (2R,3S,4R,5R,6R)-5-acetylamino-6-benzyloxycarbonylamino-3,4-dihydroxy-tetrahydro-pyran-2-ylmethyl ester

(S)-2-((S)-2-Benzoylamino-3-{(2R,3R,4R,5R,6R)-4,5-diacetoxy-3-acetylamino-6-[(2-tert-butoxycarbonylamino-benzoylamino)-methyl]-tetrahydro-pyran-2-ylcarbamoyl}-propionylamino)-3-(4-hydroxy-3-nitro-phenyl)-propionic acid methyl ester