Using O=C1CN=C(c2ccccc2)c2cc(C(=O)c3ccc(Cl)cc3)ccc2N1 to produce O=C1CN=C(c2ccccc2)c2cc(C(O)c3ccc(Cl)cc3)ccc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.