InChI=1S/C17H23NO3/c1-11(19)21-16-10-13-9-15(20)17(18(13)2)14(16)8-12-6-4-3-5-7-12/h3-7,13-17,20H,8-10H2,1-2H3/t13-,14+,15+,16+,17-/m0/s1