Methyl (1′S,2R,4′R,8′S)-4′-chloro-8′-{2-[(1R,2R,5S,6S)-2,5-dihydroxy-1-(3-methyl-2-buten-1-yl)-7-oxabicyclo[4.1.0]hept-3-ylidene]vinyl}-5-hydroxy-5′-methoxy-7,8′-dimethyl-3′,4-dioxo-1′H,4H-spiro[1,3-b enzodioxine-2,2′-bicyclo[2.2.2]oct[5]ene]-1′-carboxylate

Methyl (1′S,2R,4′R,8′S)-4′-chloro-8′-{2-[(1R,2R,5S,6S)-2,5-dihydroxy-1-(3-methyl-2-buten-1-yl)-7-oxabicyclo[4.1.0]hept-3-ylidene]vinyl}-5-hydroxy-5′-methoxy-7,8′-dimethyl-3′,4-dioxo-1′H,4H-spiro[1,3-b enzodioxine-2,2′-bicyclo[2.2.2]oct[5]ene]-1′-carboxylate

Spiro[4H-1,3-benzodioxin-2,2′-bicyclo[2.2.2]oct[5]ene]-1′-carboxylic acid, 4′-chloro-8′-[2-[(1R,2R,5S,6S)-2,5-dihydroxy-1-(3-methyl-2-buten-1-yl)-7-oxabicyclo[4.1.0]hept-3-ylidene]ethenyl]-5-hydroxy-5 ′-methoxy-7,8′-dimethyl-3′,4-dioxo-, methyl ester, (1′S,2R,4′R,8′S)-

Chloropestolide B