InChI=1S/C21H22O11/c22-7-14-17(27)18(28)19(29)21(31-14)32-20-15-10(24)5-12(8-1-3-9(23)4-2-8)30-13(15)6-11(25)16(20)26/h1-4,6,12,14,17-19,21-23,25-29H,5,7H2