Using N=C(N)N, CON=C1CCc2cc(-c3ccoc3C(=O)/C=C/N(C)C)ccc21 to produce CON=C1CCc2cc(-c3ccoc3-c3ccnc(N)n3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.