Using Cc1ccnc2c1C(=O)CC(c1ccccn1)C2, N=C(N)NN to produce Cc1ccnc2c1C(=NNC(=N)N)CC(c1ccccn1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.