InChI=1S/C23H16O6.C13H16N2O/c24-20-16(14-7-3-1-5-12(14)9-18(20)22(26)27)11-17-15-8-4-2-6-13(15)10-19(21(17)25)23(28)29;1-15-9-3-8-14-13(15)7-6-11-4-2-5-12(16)10-11/h1-10,24-25H,11H2,(H,26,27)(H,28,29);2,4-7,10,16H,3,8-9H2,1H3/b;7-6+