Crystal structure of (1<i>R</i>,2<i>S</i>,4<i>R</i>,7<i>R</i>,8<i>S</i>,9<i>R</i>)-3,3-dichloro-8,9-epoxy-4,8,12,12-tetramethyltricyclo[5.5.0.0<sup>2,4</sup>]dodecane
Acta crystallographica. Section E, Crystallographic communications