InChI=1S/C20H28N4O/c1-4-24(5-2)20(25)22-14-10-16-15-7-6-8-17-19(15)13(11-21-17)9-18(16)23(3)12-14/h6-8,11,14,16,18,21H,4-5,9-10,12H2,1-3H3,(H,22,25)/t14-,16+,18+/m0/s1