Using O=C1CCC(=O)N1Br, Cc1cc(-n2ccc(-c3cccc(Cl)c3)n2)ccc1Cl to produce Clc1cccc(-c2ccn(-c3ccc(Cl)c(CBr)c3)n2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.