InChI=1S/C21H25NO3/c1-17(2)15-22-21(23)11-9-7-5-3-4-6-8-10-18-12-13-19-20(14-18)25-16-24-19/h5,7-14H,1,3-4,6,15-16H2,2H3,(H,22,23)/b7-5+,10-8+,11-9+