(3aS,8aS)-4,4,8,8-Tetrakis(3,5-di-tert-butylphenyl)-2,2-dimethyltetrahydro-[1,3]dioxolo[4,5-e][1,3,2]dioxaphosphepine 6-oxide

(3aS,8aS)-4,4,8,8-Tetrakis(3,5-di-tert-butylphenyl)-2,2-dimethyltetrahydro-[1,3]dioxolo[4,5-e][1,3,2]dioxaphosphepine 6-oxide