Using CCOCC(O)c1cc2[nH]cnc2c(F)c1Nc1ccc(Br)cc1Cl to produce CCOCC(=O)c1cc2[nH]cnc2c(F)c1Nc1ccc(Br)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.