Using COC(=O)C1CC(c2ccc(CC(F)(F)F)c(F)c2)CN(C(=O)N2CCSCC2)C1 to produce O=C(O)C1CC(c2ccc(CC(F)(F)F)c(F)c2)CN(C(=O)N2CCSCC2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.