InChI=1S/C22H20O13/c1-32-11-4-7(19-16(27)14(25)13-9(24)5-8(23)6-12(13)33-19)2-3-10(11)34-22-18(29)15(26)17(28)20(35-22)21(30)31/h2-6,15,17-18,20,22-24,26-29H,1H3,(H,30,31)/t15-,17-,18+,20-,22+/m0/s1