Using CC(=O)Nc1ccc(C(=O)CCC(=O)N2CCC(N3Cc4ccccc4NC3=O)CC2)cc1Br to produce Nc1ccc(C(=O)CCC(=O)N2CCC(N3Cc4ccccc4NC3=O)CC2)cc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.