N~2~,N~2~,N~4~,N~4~,N~6~,N~6~,N~8~,N~8~-octakis(4-methylphenyl)-1,3,5,7,2lambda~5~,4lambda~5~,6lambda~5~,8lambda~5~-tetrazatetraphosphocine-2,2,4,4,6,6,8,8-octamine