InChI=1S/C17H18N4O2/c18-12(10-22)8-11-9-19-16-14(11)6-7-15(17(16)23)21-20-13-4-2-1-3-5-13/h1-7,9-10,12,19-21,23H,8,18H2/t12-/m0/s1