Using O=C(O)C(F)(F)F, NCc1cccc(-c2nc(=O)c3ccccc3s2)n1 to produce O=C(NCc1cccc(-c2nc(=O)c3ccccc3s2)n1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.