3,3,18,18-Tetramethyl-1,5,16,20-tetraoxadispiro[5,8,5,8] octacosane OR 5,5-Dimethyl-1,3-dioxacyclohexan-2-spiro-1'-cyclooctadecan- 10'-spiro-2"-5",5"-dimethyl-1",3"-dioxacyclohexane OR Dispiro[5,5-dimethyl-1,3-dioxacyclohexane-2,1'-cyclooctadecan- 10',2"-5",5"-dimethyl-1",3"-dioxacyclohexane]

C₂₈H₅₂O₄

Lewis, T. J.Rettig, S. J.Scheffer, J. R.Trotter, J.

Acta Crystallographica Section C (1995) 51, 12 2688-2690

a=10.718(1)Å   b=13.050(1)Å   c=5.5074(4)Å

α=90.27(1)°   β=104.32(1)°   γ=109.86(1)°