InChI=1/C16H20N4O2/c17-10-13-7-4-8-20(13)16(22)14(18)9-15(21)19-11-12-5-2-1-3-6-12/h1-3,5-6,13-14H,4,7-9,11,18H2,(H,19,21)/t13-,14-/m0/s1/f/h19H 91B8D4E63DFB98BC