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