Using N=C(N)NC(=N)Nc1ccccc1, CCCCCCCCCCCC(C)=O to produce CCCCCCCCCCCC1(C)N=C(N)N=C(N)N1c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.