InChI=1S/C21H22O10/c1-9(10-5-3-2-4-6-10)13(22)11-7-8-12(15(24)14(11)23)30-21-18(27)16(25)17(26)19(31-21)20(28)29/h2-9,16-19,21,23-27H,1H3,(H,28,29)