Using O=c1[nH]c2ccc(Cl)cc2n1-c1ccccc1, ClCCCBr to produce O=c1n(CCCCl)c2ccc(Cl)cc2n1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.