5H,12H,19H,26H-benzo[4,5][1,3,2]diazaphospholo[1,2-a]benzo[4,5][1,3,2]diazaphospholo[1,2-c]benzo[4,5][1,3,2]diazaphospholo[1,2-e]benzo[4,5][1,3,2]diazaphospholo[1,2-g][1,3,5,7,2,4,6,8]tetrazatetraphosphocine

1,4,7,10-Tetramethyl-octahydro-1,3a,4,6a,7,9a,10,12a-octaaza-3b,6b,9b,12b-tetraphospha-tetracyclopenta[a,c,e,g]cyclooctene

1,6,11,16-tetrapropyloctahydro-1H,6H,11H,16H-tetrakis([1,3,2]diazaphospholo)[1,2-a:1',2'-c:1'',2''-e:1''',2'''-g][1,3,5,7,2,4,6,8]tetrazatetraphosphocine

1,6,11,16-tetraisopropyloctahydro-1H,6H,11H,16H-tetrakis([1,3,2]diazaphospholo)[1,2-a:1',2'-c:1'',2''-e:1''',2'''-g][1,3,5,7,2,4,6,8]tetrazatetraphosphocine