Using O=Cc1ccccc1, O=C(CCc1nnc(Nc2ccc(F)cc2F)o1)NC1CCNCC1 to produce O=C(CCc1nnc(Nc2ccc(F)cc2F)o1)NC1CCN(Cc2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.