Using CS(=O)(=O)Cl, CC(C)(C)OC(=O)NCc1ccnc2[nH]ccc12 to produce CC(C)(C)OC(=O)NCc1ccnc2c1ccn2S(C)(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.