Cc1[nH+][nH]c(C(=O)[O-])c1[N+](=O)[O-]    mol12710    0_1
Cc1n[nH]c(C(=O)O)c1[N+](=O)[O-]    mol12710    0_2
Cc1n[nH]c(C(=O)[O-])c1[N+](=O)[O-]    mol12710    -1_1
Cc1n[n-]c(C(=O)O)c1[N+](=O)[O-]    mol12710    -1_2