Using N=C(N)N, Clc1cnc(Cl)c2cc(Sc3ccccc3)ccc12 to produce N=C(N)Nc1ncc(Cl)c2ccc(Sc3ccccc3)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.