Truncated penteract

The quasitruncated penteract, or quittin, also called the quasitruncated 5-cube, is a nonconvex uniform polyteron. It consists of 32 regular pentachora and 10 quasitruncated tesseracts. One pentachoron and 4 quasitruncated tesseracts join at each vertex. It is the quasitruncation of the penteract.