InChI=1S/C21H22O10/c22-11-3-1-2-10(6-11)18-13(23)7-9-4-5-12(8-14(9)30-18)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)