InChI=1S/C18H22O6S/c1-18-7-6-11-12(14(18)4-5-17(18)20)3-2-10-8-16(24-25(21,22)23)15(19)9-13(10)11/h8-9,11-12,14,19H,2-7H2,1H3,(H,21,22,23)/p-1/t11?,12?,14?,18-/m0/s1