Using CCOC(=O)N1C(=O)C2(c3ccc(Cl)cc31)C(c1cccc(Cl)c1)NC(=O)CC2C1CCCC1 to produce O=C1CC(C2CCCC2)C2(C(=O)Nc3cc(Cl)ccc32)C(c2cccc(Cl)c2)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.