(α<i>R</i>,4<i>R</i>,4a<i>R</i>,6a<i>S</i>,7<i>R</i>,8<i>S</i>,10<i>R</i>,11<i>S</i>)-Methyl α-acetoxy-4-(3-furanyl)-10-hydroxy-4a,7,9,9-tetramethyl-2,13-dioxo-1,4,4a,5,6,6a,7,8,9,10,11,12-dodecahydro-7,11-methano-2<i>H</i>-cycloocta[<i>f</i>][2]benzopyran-8-acetate (6-<i>O</i>-acetylswietenolide) from the seeds of<i>Swietenia macrophylla</i>
Acta crystallographica. Section E