InChI=1S/C18H24O7S/c1-18-5-4-9-10-6-14(19)15(20)7-12(10)16(25-26(22,23)24)8-11(9)13(18)2-3-17(18)21/h6-7,9,11,13,16-17,19-21H,2-5,8H2,1H3,(H,22,23,24)/t9?,11?,13?,16?,17?,18-/m0/s1