Using Cn1c(C2CC2)cc(=O)n1-c1ccccc1, O=C1CCC(=O)N1Br to produce Cn1c(C2CC2)c(Br)c(=O)n1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.