Using CCOC=O, O=C1Cc2ccc(C(=O)c3cccc(NC(=O)c4cccs4)c3)cc2N1 to produce O=C1Nc2cc(C(=O)c3cccc(NC(=O)c4cccs4)c3)ccc2C1=CO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.