InChI=1/C9H12N2O4/c10-8(5-12)9(13)6-1-3-7(4-2-6)11(14)15/h1-4,8-9,12-13H,5,10H2/p+1/t8-,9-/m0/s1/fC9H13N2O4/h10H/q+1 29D43E5D887C5EE9