Using O=C(n1ccnc1)n1ccnc1, O=C(CNCc1ccc(Br)cc1)NC1CC1 to produce O=C1CN(Cc2ccc(Br)cc2)C(=O)N1C1CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.