Using COC(=O)C1CN(Cc2ccccc2Cl)CCC1=O, CC(C)(C)[O-] to produce C=CCC1(C(=O)OC)CN(Cc2ccccc2Cl)CCC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.