InChI=1S/C21H22O10/c22-12(10-4-2-1-3-5-10)8-6-11-7-9-13(23)14(24)18(11)30-21-17(27)15(25)16(26)19(31-21)20(28)29/h1-5,7,9,15-17,19,21,23-27H,6,8H2,(H,28,29)