InChI=1S/C25H30N4O2/c1-28(21-10-6-3-7-11-21)23(30)14-15-29-17-20-16-19(12-13-22(20)27-25(29)26)24(31)18-8-4-2-5-9-18/h2,4-5,8-9,12-13,16,21H,3,6-7,10-11,14-15,17H2,1H3,(H2,26,27)