Using O=C1CCC(=O)N1Br, CC(C)(C)OC(=O)Nc1ccc2cc(N)ccc2c1 to produce CC(C)(C)OC(=O)Nc1ccc2c(Br)c(N)ccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.