Benzoic acid (R)-1-[(R)-1-((S)-2-{(2R,5S)-5-[(S)-1-((1R,3R)-3-benzyloxymethoxy-1-vinyl-pentyloxycarbonyl)-ethyl]-tetrahydro-furan-2-yl}-1-methyl-ethoxycarbonyl)-ethyl]-allyl ester

feigrisolide C