InChI=1S/C21H24O11/c22-7-16-17(27)18(28)19(29)21(32-16)31-14-2-1-8(3-12(14)25)20-13(26)6-10-11(24)4-9(23)5-15(10)30-20/h1-5,13,16-29H,6-7H2/t13-,16+,17+,18-,19+,20+,21+/m0/s1