InChI=1S/C19H28O8S/c1-18-4-2-11(27-28(24,25)26)6-10(18)7-14(21)16-12(18)3-5-19(9-20)13(16)8-15(22)17(19)23/h7,11-16,20-22H,2-6,8-9H2,1H3,(H,24,25,26)/t11?,12?,13?,14?,15?,16?,18-,19+/m0/s1