Using CCCC(Nc1nc2ccccc2cc1C)c1ccc(C(=O)OCC)cc1 to produce CCCC(Nc1nc2ccccc2cc1C)c1ccc(C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.