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