Showing structure for 9'-hydroxy-6,9,9',13'-tetramethyl-5'-methylidene-2,4',7-trioxo-4,5,9a,9b-tetrahydro-3ah-3'-oxaspiro[azuleno[4,5-b]furan-3,12'-tetracyclo[8.3.2.0¹,¹⁰.0²,⁶]pentadecan]-14'-en-4-yl acetate