Using O=Cc1ccc2c(c1)N(C1CCN(CCc3ccccc3F)CC1)CC2 to produce O=Cc1ccc2ccn(C3CCN(CCc4ccccc4F)CC3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.