Using CC(=O)OC(C)=O, COC(=O)c1nc(Cl)c(F)c(N)c1Cl to produce COC(=O)c1nc(Cl)c(F)c(NC(C)=O)c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.