title: 6,10,16,19-Tetra-oxatrispiro-[4.2.2.4.2.2]nona-deca-ne.
abstract: The asymmetric unit of the title compound, C(15)H(24)O(4), contains one half-mol-ecule; a twofold rotation axis passes through the central C atom. The non-planar six- and five-membered rings adopt chair and envelope conformations, respectively. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules.
authors.affiliation: Department of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, People's Republic of China.
authors.forename: Ji-Kui
authors.initials: JK
authors.lastname: Wang
authors.forename: Hai-Bo
authors.initials: HB
authors.lastname: Wang
authors.forename: Cong-Ren
authors.initials: CR
authors.lastname: Wu
authors.forename: Jin-Tang
authors.initials: JT
authors.lastname: Wang