A mixed valence copper coordination polymer with a new highly self-penetrated topology

{[Cu5(oba)4(bpmp)3(H2O)2]·10H2O}n (pictured, oba = oxybisbenzoate, bpmp = bis(4-pyridylmethyl)piperazine) shows a complicated 3D self-penetrated 3,4,4-connected (83)2(6.8.104)(64.8.10) topology.397