InChI=1S/C16H17N5O3/c1-8-11(23)3-10(12-9(5-22)4-20(2)14(8)12)21-7-19-13-15(21)17-6-18-16(13)24/h4-8,10-11,23H,3H2,1-2H3,(H,17,18,24)/t8-,10-,11-/m1/s1