Using CCOC(=O)CCN=C=O, Nc1ccc2c(c1)Cc1c-2[nH]c(=O)c2nccn12 to produce CCOC(=O)CCNC(=O)Nc1ccc2c(c1)Cc1c-2[nH]c(=O)c2nccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.