InChI=1/C14H15NO4/c16-12-4-2-1-3-9(12)8-15-10-5-6-11(14(18)19)13(17)7-10/h5-8,15,17H,1-4H2,(H,18,19)/p-1/b9-8+/fC14H14NO4/q-1 995AB1008AB3C13A