SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL CCCCCCCCCCCCCCCC(=O)OC[C@H](COC1[C@@H]([C@H]([C@@H]([C@H](O1)CS(=O)(=O)O)O)O)O)OC(=O)CCCCCCCCCCCCCCC