InChI=1/C7H11NO5/c9-6(10)4-13-8-7(11)5-2-1-3-12-5/h5H,1-4H2,(H,8,11)(H,9,10)/p-1/t5-/m1/s1/fC7H10NO5/h11H/q-1/b8-7+ 1B39D42BEF119253