Using CC(C)(C)OC(=O)N(CCCl)CCCl, COC(=O)Cc1ccccc1F to produce COC(=O)C1(c2ccccc2F)CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.