Using CSC(=N)NN=Cc1c(Cl)cccc1Cl, NCc1c(F)cccc1F to produce N=C(NCc1c(F)cccc1F)NN=Cc1c(Cl)cccc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.