Using Cc1cc(F)c(-n2nc(O)cc2C)cc1SCC(F)(F)F, OCCC(F)(F)F to produce Cc1cc(F)c(-n2nc(OCCC(F)(F)F)cc2C)cc1SCC(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.