Using O=C(O)CC(=O)O, O=Cc1ccc(N(c2ccccc2)c2ccccc2)cc1 to produce O=C(O)C=Cc1ccc(N(c2ccccc2)c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.