2,4,8,10-Tetra-tert-butyl-6-(2-ethylhexyloxy)-6H,12H-5,7-dioxa-6-phosphadibenzo[a,d]cyclooctene

2,4,8,10-Tetrakis(1,1-dimethylethyl)-6-[(2-ethylhexyl)oxy]-12H-dibenzo[d,g][1,3,2]dioxaphosphocin