Using CCCCC1C(=O)N(c2ccccc2)N(c2ccccc2)C1=O, CC(C)(C)C(=O)OCCl to produce CCCCC1(COC(=O)C(C)(C)C)C(=O)N(c2ccccc2)N(c2ccccc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.