Using O=C(OO)c1cccc(Cl)c1, CCOC(=O)C(=C(C)C)c1ccc(Cl)cc1 to produce CCOC(=O)C1(c2ccc(Cl)cc2)OC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.