InChI=1S/C21H29NO3/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/h5,7-8,10,12-14,17H,3-4,6,9,11,15-16H2,1-2H3,(H,22,23)/b7-5+,10-8+