Using O=C1CCCc2cnc(-c3ccc(N4CCOCC4)c(Cl)c3)nc21, BrBr to produce O=C1c2nc(-c3ccc(N4CCOCC4)c(Cl)c3)ncc2CCC1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.