(6R)-5-乙酰氨基-3,5-二脱氧-6-[(1R,2R)-1,2,3-三羟基丙基]-beta-L-苏式-己-2-酮吡喃糖基-(2->6)-beta-D-吡喃半乳糖基-(1->4)-2-乙酰氨基-2-脱氧-beta-D-吡喃葡萄糖基-(1->3)-beta-D-吡喃半乳糖基-(1->4)-D-吡喃葡萄糖