InChI=1S/C22H24N4O2/c27-22(20-7-4-16-28-20)26(21-17-23-11-12-24-21)19-9-14-25(15-10-19)13-8-18-5-2-1-3-6-18/h1-7,11-12,16-17,19H,8-10,13-15H2