Using C=C(CCl)c1cccc(Cl)n1, CC1C(=O)c2ccc(Cl)cc2C1=O to produce C=C(CC1(C)C(=O)c2ccc(Cl)cc2C1=O)c1cccc(Cl)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.