InChI=1S/C16H25NO3/c1-17(2)11-13-7-8-14(18)10-16(13,19)12-5-4-6-15(9-12)20-3/h4-6,9,13-14,18-19H,7-8,10-11H2,1-3H3/t13-,14-,16+/m0/s1