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