title: [Trans-perhydro-cyclopenta(1.2-c:3.4-c')difurane and -diethiphene (author's transl)].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D005663:Furans / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D011083:Polycyclic Compounds; D013237:Stereoisomerism; D013876:Thiophenes / Q000138:chemical synthesis*
chemical_list: D005663:Furans; D011083:Polycyclic Compounds; D013876:Thiophenes
vernacular_title: Trans-Perhydro-cyclopenta(1.2-c:3.4-c') difuran und -dithiophen