Using O=C1CCC(=O)N1Br, Cc1ccc(-n2cc(Cl)c(Cl)c2C#N)cc1 to produce N#Cc1c(Cl)c(Cl)cn1-c1ccc(CBr)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.