InChI=1S/C21H28O10/c1-8-3-11(24)15-9(2)20(28)30-18(15)16-10(4-12(25)14(8)16)6-29-21(7-23)19(27)17(26)13(5-22)31-21/h4,9,11,13,15-19,22-24,26-27H,3,5-7H2,1-2H3/t9-,11-,13+,15+,16-,17+,18-,19-,21+/m0/s1