Using O=C(Nc1nc2ccccc2n1CCCN1CCN(Cc2ccccc2)CC1)c1ccc(C(F)(F)F)cc1 to produce O=C(Nc1nc2ccccc2n1CCCN1CCNCC1)c1ccc(C(F)(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.