Using COC(=O)C=CC(CC(C)N(C)C)(c1ccccc1)c1ccccc1 to produce COC(=O)CCC(CC(C)N(C)C)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.