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