InChI=1/C16H22N4O3/c21-16(19-8-2-1-3-9-19)14-12-13(20(22)23)4-5-15(14)18-10-6-17-7-11-18/h4-5,12,17H,1-3,6-11H2/p+1/fC16H23N4O3/h17H/q+1 756D8B76A14E903C