InChI=1S/C15H17NO3/c1-3-4-5-6-7-11(2)8-9-12(17)14-13(18)10-16-15(14)19/h3-9,17H,10H2,1-2H3,(H,16,19)/b4-3+,6-5+,9-8+,11-7+,14-12-