2,2'-[(2,2-Dimethyl-1,3-propanediyl)bis(oxy)]bis[5,5-dimethyl-1,3,2-dioxaphosphorinane-2-oxide]

2,2'-[(2,2-dimethylpropane-1,3-diyl)bis(oxy)]bis[5,5-dimethyl-1,3,2-dioxaphosphorinane] 2,2'-dioxide