Cu3C18N15H12O crystallizes in the cubic Fd-3c space group. Cu(1) is bonded in a square co-planar geometry to one N(3), two equivalent N(1), and one O(1) atom. The Cu(1)-N(3) bond length is 2.00 Å. Both Cu(1)-N(1) bond lengths are 1.98 Å. The Cu(1)-O(1) bond length is 1.97 Å. There are four inequivalent C sites. In the first C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(1), one N(3), and one H(2) atom. The C(2)-C(1) bond length is 1.38 Å. The C(2)-N(3) bond length is 1.33 Å. The C(2)-H(2) bond length is 0.95 Å. In the second C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one C(4), and one H(1) atom. The C(1)-C(4) bond length is 1.38 Å. The C(1)-H(1) bond length is 0.95 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4) and two equivalent N(2) atoms. The C(3)-C(4) bond length is 1.46 Å. Both C(3)-N(2) bond lengths are 1.33 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3) and two equivalent C(1) atoms. There are three inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Cu(1), one N(1), and one N(2) atom. The N(1)-N(1) bond length is 1.31 Å. The N(1)-N(2) bond length is 1.32 Å. In the second N site, N(2) is bonded in a water-like geometry to one C(3) and one N(1) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Cu(1) and two equivalent C(2) atoms. There are two inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(1) is bonded in a single-bond geometry to one C(1) atom. O(1) is bonded in a trigonal planar geometry to three equivalent Cu(1) atoms. Linkers: 24 c1cc(C2=NN=N[N]2)ccn1. Metal clusters: 8 N1=N[Cu]2=NN=[Cu](N=N[Cu]1)O2. The MOF has largest included sphere 12.70 A, density 0.72 g/cm3, surface area 3697.72 m2/g, accessible volume 1.13 cm3/g