Using O=C1Nc2ccc(Cl)cc2C1=O, COc1ncc(Br)c(OC)n1 to produce COc1ncc(C2(O)C(=O)Nc3ccc(Cl)cc32)c(OC)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.