Grand ditetrahedronary hexacosihecatonicosachoric antiprism

The grand ditetrahedronary hexacosihecatonicosachoric antiprism or sidtaxhiap, is a nonconvex uniform polyteron that consists of 2 small ditetrahedronary hexacosihecatonicosachora, 120 great ditrigonary icosidodecahedral antiprisms, and 1200 pentachora. Each vertex joins 1 grand ditetrahedronary hexacosihecatonicosachoron, 4 great ditrigonary icosidodecahedral antiprisms, and 5 pentachora.