Using CCOC(=O)c1cn(NCC=O)c2c(OCc3ccccc3)c(F)c(F)cc2c1=O to produce CCOC(=O)c1cn(NCC=O)c2c(O)c(F)c(F)cc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.