Using CC(C)(C)OC(=O)N1CC=C(c2cccc(-c3ccc4c(c3)C(C)(C)CCC4(C)C)n2)CC1 to produce CC(C)(C)OC(=O)N1CCC(c2cccc(-c3ccc4c(c3)C(C)(C)CCC4(C)C)n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.