Using COC(=O)c1ccc2c(ccn2S(=O)(=O)c2ccccc2)c1, [NH4+] to produce Nc1ccc2c(ccn2S(=O)(=O)c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.