Using C1CN2CCC(CC2)N1, O=C(O)CNC(=O)c1cccc(Br)c1 to produce O=C(NCC(=O)N1CCN2CCC1CC2)c1cccc(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.