Methyl (1′S,2R,3′S,6′R,7′S)-7′-chloro-4′-[(1R,2R,5S,6S)-2,5-dihydroxy-1-(3-methyl-2-buten-1-yl)-7-oxabicyclo[4.1.0]hept-3-en-3-yl]-3′,5-dihydroxy-8′-methoxy-6′,7-dimethyl-4-oxo-1′H,4H-spiro[1,3-benzod ioxine-2,2′-tricyclo[4.3.1.0~3,7~]deca[4,8]diene]-1′-carboxylate

Methyl (1′S,2R,3′S,6′R,7′S)-7′-chloro-4′-[(1R,2R,5S,6S)-2,5-dihydroxy-1-(3-methyl-2-buten-1-yl)-7-oxabicyclo[4.1.0]hept-3-en-3-yl]-3′,5-dihydroxy-8′-methoxy-6′,7-dimethyl-4-oxo-1′H,4H-spiro[1,3-benzod ioxine-2,2′-tricyclo[4.3.1.0~3,7~]deca[4,8]diene]-1′-carboxylate

chloropupukeanolide D