InChI=1/C16H20N4O2/c21-15(9-12-3-1-2-4-12)19-13-5-6-14(18-10-13)20-8-7-17-16(22)11-20/h1,3,5-6,10,12H,2,4,7-9,11H2,(H,17,22)(H,19,21)/t12-/m0/s1/f/h17,19H 3039F19059F8E4BD