Using C=CCN(CC(=O)OCC)NC(=O)N[C@@H](C)c1ccccc1 to produce C=CCN(CC(=O)O)NC(=O)N[C@@H](C)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.