InChI=1S/C18H22O6S/c1-18-7-6-13-12(14(18)4-5-16(18)20)3-2-10-8-11(24-25(21,22)23)9-15(19)17(10)13/h8-9,12-14,19H,2-7H2,1H3,(H,21,22,23)/t12?,13?,14?,18-/m0/s1