Using CCOC(CNCc1ccccc1)OCC, CCCC[C@H](NC(=O)OC(C)(C)C)C(=O)O to produce CCCC[C@@H](NC(=O)OC(C)(C)C)C(=O)NCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.