Using O=Cc1ccc(CN2C(=O)c3ccccc3C2=O)c(Cl)c1, O=C([O-])[O-] to produce C=Cc1ccc(CN2C(=O)c3ccccc3C2=O)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.