InChI=1S/C21H25NO3/c1-22(14-20(23)24)13-17-9-8-16-12-18(25-2)10-11-19(16)21(17)15-6-4-3-5-7-15/h3-7,10-12,17,21H,8-9,13-14H2,1-2H3,(H,23,24)/t17-,21+/m1/s1