Using c1nc2c(s1)CCNCC2, O=C(O)Cn1nc(-c2ccc(F)cc2)nc1-c1ccc(F)cc1 to produce O=C(Cn1nc(-c2ccc(F)cc2)nc1-c1ccc(F)cc1)N1CCc2ncsc2CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.