Using O=C(O)c1cc2ccccc2s1, CC(CCCCCCOS(C)(=O)=O)=C(F)F to produce CC(CCCCCCOC(=O)c1cc2ccccc2s1)=C(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.