4-Methylumbelliferyl 4-deoxy-b-D-chitobiose peracetate

7-[[3,6-Di-O-Acetyl-2- (acetylamino) -2-deoxy-4-O-[3,6-di-O-acetyl-2- (acetylamino) -2,4-dideoxy-?-D-xylo-hexopyranosyl]-?-D-glucopyrano syl]oxy]-4-methyl-2H-1-benzopyran-2-one

CC1=CC (=O) OC2=C1C=CC (=C2) O[C@H]3[C@@H] ([C@H] ([C@@H] ([C@H] (O3) COC (=O) C) O[C@H]4[C@@H] ([C@H] (C[C@H] (O4) COC (=O) C) OC (=O) C) NC (=O) C) OC (=O) C) NC (=O) C