Cn1c(=O)c2[nH+]c(C(=O)[O-])c(=O)n(C)c2n(C)c1=O mol11354 0_1 Cn1c(=O)c2nc(C(=O)O)c(=O)n(C)c2n(C)c1=O mol11354 0_2 Cn1c(=O)c2nc(C(=O)[O-])c(=O)n(C)c2n(C)c1=O mol11354 -1_1