InChI=1S/C20H24O7S/c1-12-15(11-27-28(22,23)24)7-14-9-19(26-3)18(21)10-17(14)20(12)13-5-4-6-16(8-13)25-2/h4-6,8-10,12,15,20-21H,7,11H2,1-3H3,(H,22,23,24)