InChI=1S/C18H22O7S/c1-18-5-4-12-11-3-2-10(25-26(22,23)24)6-9(11)7-14(19)16(12)13(18)8-15(20)17(18)21/h2-3,6,12-14,16-17,19,21H,4-5,7-8H2,1H3,(H,22,23,24)/t12?,13?,14?,16?,17?,18-/m0/s1