InChI=1S/C21H20O11/c22-6-11-14(25)17(28)19(30)21(32-11)13-15(26)12-9(24)5-10(7-1-3-8(23)4-2-7)31-20(12)18(29)16(13)27/h1-5,11,14,17,19,21-23,25-30H,6H2/t11-,14+,17+,19-,21+/m1/s1