InChI=1S/C21H28N2O3/c1-6-23(20-10-7-16(12-22-20)21(24)25)17-8-9-18(15(4)5)19(11-17)26-13-14(2)3/h7-12,14-15H,6,13H2,1-5H3,(H,24,25)