Using Oc1ccc(Nc2ncc(Br)c(Nc3ccccc3)n2)cc1, CN1CCN(CCCCl)CC1 to produce CN1CCN(CCCOc2ccc(Nc3ncc(Br)c(Nc4ccccc4)n3)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.