Using COC(=O)c1cc(C)cc(-c2cc3nccc(-c4ccccc4)c3o2)c1 to produce Cc1cc(C(=O)O)cc(-c2cc3nccc(-c4ccccc4)c3o2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.