Cc1[nH]c(=O)[nH]c(=O)c1Cl    mol34018    0_1
Cc1[n-]c(=O)[nH]c(=O)c1Cl    mol34018    -1_1
Cc1[nH]c(=O)[n-]c(=O)c1Cl    mol34018    -1_2