InChI=1S/C21H28O10/c1-7-3-11-14(8(2)20(28)30-11)17(25)15-9(4-10(23)13(7)15)6-29-21-19(27)18(26)16(24)12(5-22)31-21/h4,8,11-12,14-19,21-22,24-27H,3,5-6H2,1-2H3/t8-,11-,12?,14+,15-,16?,17-,18?,19?,21?/m0/s1