title: 3,3,12,12-Tetra-methyl-1,5,10,14-tetra-oxa-dispiro-[5.2.5.2]hexa-deca-ne.
abstract: The mol-ecule of the title compound, C(16)H(28)O(4), is centrosymmetric. The cyclo-hexane ring and both six-membered dioxane rings adopt chair conformations. In the crystal, the mol-ecules lie in layers in the (100) planes and the shortest inter-molecular contacts are H⋯H (2.30 Å).
authors.affiliation: Jiangsu Institute of Nuclear Medicine, Wuxi 214063, People's Republic of China.
authors.forename: Yong-Jun
authors.initials: YJ
authors.lastname: He
authors.forename: Min-Hao
authors.initials: MH
authors.lastname: Xie
authors.forename: Pei
authors.initials: P
authors.lastname: Zou
authors.forename: Ya-Ling
authors.initials: YL
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Wu