InChI=1S/C22H24N2O3/c1-16(2)20-19(13-17-9-5-3-6-10-17)24(22(26)23-21(20)25)15-27-14-18-11-7-4-8-12-18/h3-12,16H,13-15H2,1-2H3,(H,23,25,26)