Using Fc1ccc2nc(CNc3ncnc4c3ncn4C3CCCCO3)n(-c3ccccc3)c2c1 to produce Fc1ccc2nc(CNc3ncnc4[nH]cnc34)n(-c3ccccc3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.