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[(2R,3R,6S)-2-{(1R,2S,3S,4R,5S,6R)-2-Benzyloxycarbonylamino-5-[(4-benzyloxycarbonylamino-2-hydroxy-butyryl)-methyl-amino]-3,6-dihydroxy-4-methoxy-cyclohexyloxy}-6-(1-benzyloxycarbonylamino-ethyl)-tetrahydro-pyran-3-yl]-carbamic acid benzyl ester