InChI=1/C16H20N4O/c1-10(2)15(18)16(21)20-12(8-17)7-11-9-19-14-6-4-3-5-13(11)14/h3-6,9-10,12,15,19H,7,18H2,1-2H3,(H,20,21)/t12-,15-/m0/s1/f/h20H D893C410043FAEAF