InChI=1S/C19H23NO3/c1-14(19(22)15-7-4-3-5-8-15)20-12-11-18(21)16-9-6-10-17(13-16)23-2/h3-10,13-14,19-20,22H,11-12H2,1-2H3/t14-,19-/m0/s1