InChI=1S/C21H32O9/c1-9-12(22)6-13(11-5-4-10(7-20(9,11)2)21(3)8-28-21)29-19-16(25)14(23)15(24)17(30-19)18(26)27/h5,9-10,12-17,19,22-25H,4,6-8H2,1-3H3,(H,26,27)/t9?,10?,12?,13?,14?,15?,16?,17?,19?,20-,21?/m1/s1