Using CC(C)(C)OC(=O)N1CCC(=C2C(=O)Nc3cc(Cl)ccc32)CC1 to produce CC(C)(C)OC(=O)N1CCC(C2C(=O)Nc3cc(Cl)ccc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.