InChI=1/C21H23NO3/c1-21(2,3)14-8-9-18-16(11-14)17(12-19(23)24)20(22-18)13-6-5-7-15(10-13)25-4/h5-11,22H,12H2,1-4H3,(H,23,24)/p-1/fC21H22NO3/q-1 639461F872E02268