Using Cc1cc(Br)c2oc(C=O)c(Cc3ccccc3)c2c1, [NH4+] to produce Cc1cc(Br)c2oc(C#N)c(Cc3ccccc3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.