InChI=1S/C21H24O7S/c1-21(2)13-12-17-19(27-21)11-7-15(20(17)26-3)6-10-18(28-29(23,24)25)14-4-8-16(22)9-5-14/h4-5,7-9,11-13,18,22H,6,10H2,1-3H3,(H,23,24,25)