CuC7N3O4 crystallizes in the orthorhombic P2_12_12_1 space group. Cu(1) is bonded in a distorted square pyramidal geometry to one N(1), one N(2), one O(1), one O(2), and one O(3) atom. The Cu(1)-N(1) bond length is 1.98 Å. The Cu(1)-N(2) bond length is 1.98 Å. The Cu(1)-O(1) bond length is 2.37 Å. The Cu(1)-O(2) bond length is 1.99 Å. The Cu(1)-O(3) bond length is 1.94 Å. There are seven inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.52 Å. The C(1)-O(1) bond length is 1.21 Å. The C(1)-O(2) bond length is 1.24 Å. In the second C site, C(2) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one C(3), and one N(1) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-N(1) bond length is 1.53 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(2) and one C(4) atom. The C(3)-C(4) bond length is 1.48 Å. In the fourth C site, C(4) is bonded in a bent 120 degrees geometry to one C(3), one O(3), and one O(4) atom. The C(4)-O(3) bond length is 1.26 Å. The C(4)-O(4) bond length is 1.23 Å. In the fifth C site, C(5) is bonded in a water-like geometry to one N(2) and one N(3) atom. The C(5)-N(2) bond length is 1.32 Å. The C(5)-N(3) bond length is 1.36 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(7) and one N(3) atom. The C(6)-C(7) bond length is 1.32 Å. The C(6)-N(3) bond length is 1.36 Å. In the seventh C site, C(7) is bonded in a distorted single-bond geometry to one C(6) and one N(2) atom. The C(7)-N(2) bond length is 1.37 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a water-like geometry to one Cu(1) and one C(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Cu(1), one C(5), and one C(7) atom. In the third N site, N(3) is bonded in a water-like geometry to one C(5) and one C(6) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(4) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one C(4) atom. Linkers: 4 [N][C]([C]C([O])=O)C([O])=O. Metal clusters: 4 [Cu]. RCSR code: utp. The MOF has largest included sphere 3.80 A, density 1.46 g/cm3, surface area 4151.52 m2/g, accessible volume 0.27 cm3/g