InChI=1S/C24H28N4O4/c1-12(2)20-22(30)32-24(3,23(31)26-20)27-21(29)14-8-16-15-6-5-7-17-19(15)13(10-25-17)9-18(16)28(4)11-14/h5-8,10,12,14,18,20,25H,9,11H2,1-4H3,(H,26,31)(H,27,29)/t14-,18-,20+,24+/m1/s1