CC1=C(CC[C@H](C)O)[C@H](/C=C(\C)CC[C@H](O)[C@@]2(C)CCC(=O)O2)OC1 (5R)-5-((1S,4E)-1-hydroxy-5-((2S)-3-((3S)-3-hydroxybutyl)-4-methyl-2,5-dihydrofuran-2-yl)-4-methylpent-4-en-1-yl)-5-methyloxolan-2-one