Using Nc1ncc(-c2ccc(O)cc2)nc1Cc1ccccc1, CCCC(=O)C(=O)O to produce CCCC(Nc1ncc(-c2ccc(O)cc2)nc1Cc1ccccc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.