InChI=1S/C21H25N3O3/c1-12-19(24-20(21(22)27)13(2)23-12)17-9-7-16(8-10-17)15-5-3-14(4-6-15)11-18(25)26/h7-10,14-15H,3-6,11H2,1-2H3,(H2,22,27)(H,25,26)/t14-,15-