Using C[C@@H]1CN(c2nc(C#N)cs2)C[C@H](C)O1, O=C1CCC(=O)N1Br to produce C[C@@H]1CN(c2nc(C#N)c(Br)s2)C[C@H](C)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.