Using CCOP(=O)(OCC)C(F)(F)c1c(F)c(F)c(F)c(F)c1F to produce O=P(O)(O)C(F)(F)c1c(F)c(F)c(F)c(F)c1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.