InChI=1S/C18H22O7S/c1-18-8-15(25-26(22,23)24)16-11-5-3-10(19)6-9(11)2-4-12(16)13(18)7-14(20)17(18)21/h3,5-6,12-16,19-20H,2,4,7-8H2,1H3,(H,22,23,24)/t12?,13?,14?,15?,16?,18-/m0/s1