InChI=1/C17H18N4O4/c1-23-12-7-6-9(8-13(12)24-2)15-14-10(4-3-5-11(14)22)18-16-17(19-15)21-25-20-16/h6-8,15H,3-5H2,1-2H3,(H,18,20)(H,19,21)/t15-/m0/s1/f/h18-19H 8872FDCFCB875A5C