InChI=1/C19H26N4O3/c1-12-7-8-15(11-13(12)2)23-10-9-16(18(23)25)17(24)21-22-19(26)20-14-5-3-4-6-14/h7-8,11,14,16H,3-6,9-10H2,1-2H3,(H,21,24)(H2,20,22,26)/t16-/m0/s1/f/h20-22H 27413E670C2B14E4