Using CCOC(=O)C(CO)NC(=O)CCC(NC(=O)OCc1ccccc1)C(=O)OCC to produce CCOC(=O)C(N)CCC(=O)NC(CO)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.