title: (1RS,4RS,5RS)-Methyl 2-(3,5-dinitro-benzo-yl)-2-oxa-3-aza-bicyclo-[3.3.0]oct-7-ene-4-carboxyl-ate.
abstract: The title compound, C(15)H(13)N(3)O(8), comprises two crystallographically independent mol-ecules in the asymmetric unit. In the crystal, intermolecular C-H⋯O hydrogen bonds link the molecules and short C=O⋯π contacts are seen.
authors.forename: Carlos A D
authors.initials: CA
authors.lastname: Sousa
authors.forename: José E
authors.initials: JE
authors.lastname: Rodríguez-Borges
authors.forename: M Luísa C
authors.initials: ML
authors.lastname: Vale
authors.forename: Xerardo
authors.initials: X
authors.lastname: Garcia-Mera