InChI=1/C20H18N2O7/c1-11-16(17-18(29-11)21-10-22(2)19(17)24)20(25)28-9-13(23)12-4-5-14-15(8-12)27-7-3-6-26-14/h4-5,8,10H,3,6-7,9H2,1-2H3 8446AEDC1E055252