InChI=1/C21H22O12/c22-10-2-1-7(3-12(10)24)17-13(25)6-9-11(23)4-8(5-14(9)32-17)31-19-16(27)15(26)18(20(28)29)33-21(19)30/h1-5,13,15-19,21-27,30H,6H2,(H,28,29)/t13-,15?,16?,17-,18?,19?,21?/s2