InChI=1S/C21H22O10/c22-8-14-16(25)18(27)19(28)21(31-14)30-13-7-11(24)15-10(23)6-12(29-20(15)17(13)26)9-4-2-1-3-5-9/h1-5,7,12,14,16,18-19,21-22,24-28H,6,8H2