Dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin, 8,9,10,11,12,13,14,15-octahydro-4-hydroxy-2,6-bis(2,4,6-tricyclohexylphenyl)-, 4-oxide, (11bS)-

Dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin, 8,9,10,11,12,13,14,15-octahydro-4-hydroxy-2,6-bis(2,4,6-tricyclohexylphenyl)-, 4-oxide, (11bS)-,