Using [NH4+], CC1=C(c2ccncc2)SC(OC(=O)c2cccc(Cl)c2)C(=O)N1 to produce CC1=C(c2ccncc2)SC(N)C(=O)N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.