InChI=1S/C21H22O8S/c1-13(2)10-15(29-30(23,24)25)11-14(3)6-8-27-21-16-4-5-20(22)28-19(16)12-18-17(21)7-9-26-18/h4-7,9-10,12,15H,8,11H2,1-3H3,(H,23,24,25)