(S)-4-oxide-2,6-bisbis([1,1':3',1''-terphenyl]-5'-yl)-8,9,10,11,12,13,14,15-octahydro-4-hydroxydinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin
(11BS)-8,9,10,11,12,13,14,15-OCTAHYDRO-4-HYDROXY-2,6-BIS([1,1':3',1''-TERPHENYL]-5'-YL)-4-OXIDE-DINAPHTHO[2,1-D:1',2'-F][1,3,2]DIOXAPHOSPHEPIN