C/C(=N/N)C(=O)O mol35310 0_1 C/C(=N/[NH3+])C(=O)[O-] mol35310 0_2 C/C(=[NH+]/N)C(=O)[O-] mol35310 0_3 C/C(=N/N)C(=O)[O-] mol35310 -1_1 C/C(=N/[NH-])C(=O)O mol35310 -1_2