InChI=1S/C17H18O7S/c1-9-15(18)10(2)17-14(16(9)19)13(24-25(20,21)22)8-12(23-17)11-6-4-3-5-7-11/h3-7,12-13,18-19H,8H2,1-2H3,(H,20,21,22)