InChI=1S/C13H15NO3/c15-11-8-4-7-10(14-11)12(13(16)17)9-5-2-1-3-6-9/h1-3,5-6,10,12H,4,7-8H2,(H,14,15)(H,16,17)/t10-,12-/m1/s1