Using CC(c1ccccc1)C1(O)C(=O)NC(=O)NC1=O, CC(C)(C)C(=O)Cl to produce CC(c1ccccc1)C1(OC(=O)C(C)(C)C)C(=O)NC(=O)NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.