title: exo,exo-4-(2-Hy-droxy-eth-yl)-10-oxa-4-aza-tricyclo-[5.2.1.0]dec-8-ene-3,5-dione.
abstract: In the crystal of the title compound, C(10)H(11)NO(4), the hy-droxy group forms an O-H⋯O(carbon-yl) hydrogen bond with an adjacent molecule, so forming chains which extend along (010). Further weak C-H⋯O hydrogen-bonding associations give an infinite three-dimensional network structure.
authors.affiliation: School of Chemical and Pharmaceutical Engineering, Shandong Institute of Light Industry, Jinan 250353,  People's Republic of China.
authors.forename: Xue-Jie
authors.initials: XJ
authors.lastname: Tan
authors.forename: Chen-Guang
authors.initials: CG
authors.lastname: Li
authors.forename: Dian-Xiang
authors.initials: DX
authors.lastname: Xing
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu