Showing structure for methyl 16-{3-[(acetyloxy)methyl]-7,11-dimethyldodeca-2,6,10-trien-1-yl}-10,14-dihydroxy-2-(prop-1-en-2-yl)-6,18-dioxapentacyclo[9.7.1.1¹,⁵.0⁷,¹⁹.0¹²,¹⁷]icosa-7(19),8,10,12,14,16-hexaene-5-carboxylate