InChI=1/C20H22N4O4/c1-3-11-23-18-16(19(27)24(12-4-2)20(23)28)21-17(22-18)14-8-5-13(6-9-14)7-10-15(25)26/h5-10H,3-4,11-12H2,1-2H3,(H,21,22)(H,25,26)/p-1/b10-7+/fC20H21N4O4/h21H/q-1 CF61CC2114709FCB