Using O=C(O)c1ccc(Br)s1, COC(=O)C(CN)Nc1ncccn1 to produce COC(=O)C(CNC(=O)c1ccc(Br)s1)Nc1ncccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.