Using CCOC(=O)N1CCc2ccc(NC(=O)C=C(C)C)cc2CC1 to produce CCOC(=O)N1CCc2cc3c(cc2CC1)C(C)(C)CC(=O)N3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.