(11aS)-4,8-Di([1,1'-biphenyl]-4-yl)-12-hydroxy-1,2,4,5,6,7-hexahydrodiindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocine 12-oxide 1g

(11aS)-4,8-Di([1,1'-biphenyl]-4-yl)-12-hydroxy-1,2,4,5,6,7-hexahydrodiindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocine 12-oxide 1g