InChI=1S/C21H22O12/c1-7(9-4-5-11(22)15(26)14(9)25)13(24)10-3-2-8(6-12(10)23)32-21-18(29)16(27)17(28)19(33-21)20(30)31/h2-7,16-19,21-23,25-29H,1H3,(H,30,31)