(1R,2S,4R,6S,9R,13R,14S,E)-6-hydroxy-13-methoxy-14-methyl-9-((S)-3-methylbut-3-en-2-yl)-15-methylene-3,10,17-trioxatricyclo[11.3.1.02,4]heptadec-7-en-11-one

(1R,2S,4R,9R,13R,14S,E)-13-methoxy-14-methyl-9-((S)-3-methylbut-3-en-2-yl)-15-methylene-3,10,17-trioxatricyclo[11.3.1.02,4]heptadec-7-ene-6,11-dione