InChI=1/C18H22N4O2/c1-10(2)13(12-6-4-5-7-14(12)23-3)8-11-9-24-17-15(11)16(19)21-18(20)22-17/h4-7,9-10,13H,8H2,1-3H3,(H4,19,20,21,22)/t13-/m0/s1/f/h19-20H2 D65D473717135895