Using COC(=O)c1ccc(Cl)c(N)c1, O=Cc1cccc(Br)c1 to produce COC(=O)c1ccc(Cl)c(N=Cc2cccc(Br)c2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.