InChI=1S/C18H22O7S/c19-9-18-6-5-11-12(14(18)3-4-17(18)21)2-1-10-7-16(25-26(22,23)24)15(20)8-13(10)11/h7-8,11-12,14,19-20H,1-6,9H2,(H,22,23,24)/t11?,12?,14?,18-/m1/s1