Using CCOC(=O)CBr, NC(=O)c1c(Br)cc(Br)c(O)c1Br to produce COC(=O)COc1c(Br)cc(Br)c(C(N)=O)c1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.