1 State Key Laboratory Base of Novel Functional Materials, and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China.
In the title compound, C(20)H(20)N(4)O(4), the complete molecule is generated by a crystallographic centre of symmetry. The conformation is stabilized by two intramolecular C-H⋯N links.