Using Cc1cc2ncn(C3CCNCC3)c2cc1F, O=CC1Cc2ccc(F)cc2C1 to produce Cc1cc2ncn(C3CCN(CC4Cc5ccc(F)cc5C4)CC3)c2cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.