Using NCCCN1CCN(CCCN)CC1, O=Cc1ccc(-c2ccccc2)cc1 to produce c1ccc(-c2ccc(CNCCCN3CCN(CCCNCc4ccc(-c5ccccc5)cc4)CC3)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.