Using O=C1NC(=O)C(Cc2cn(Cc3ccc(OCc4ccccc4)cc3)c3ccccc23)S1 to produce O=C1NC(=O)C(Cc2cn(Cc3ccc(O)cc3)c3ccccc23)S1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.