Showing structure for (1s,2r,3s,5r,8s,9z,13r,14s,15s,17r,19s)-2,15-bis(acetyloxy)-5,10,14,19-tetramethyl-6-oxo-4,7,18-trioxapentacyclo[12.5.0.0³,⁵.0³,⁸.0¹⁷,¹⁹]nonadec-9-en-13-yl butanoate