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