Using CCOC(=O)c1c[nH]c(=S)n1C1CCc2c(F)cc(F)cc2C1 to produce O=C(O)c1c[nH]c(=S)n1C1CCc2c(F)cc(F)cc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.