Using Oc1ccc(-c2c3c(nc4ccnn24)CCCCC3)cc1, ClCCCBr to produce ClCCCOc1ccc(-c2c3c(nc4ccnn24)CCCCC3)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.