Using CCNC(=O)C(COCCC(=O)OC)(C(=O)NCC)c1ccccc1 to produce CCNC(=O)C(COCCC(=O)O)(C(=O)NCC)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.