InChI=1S/C21H26N2O2/c1-2-23-15-9-14-19(23)16-22-20(24)21(25,17-10-5-3-6-11-17)18-12-7-4-8-13-18/h3-8,10-13,19,25H,2,9,14-16H2,1H3,(H,22,24)