Showing structure for 6,10,10,14,15,18,21-heptamethyl-4,22-dioxo-23-oxahexacyclo[19.2.1.0¹,¹⁸.0²,¹⁵.0⁵,¹⁴.0⁶,¹¹]tetracos-2-en-9-yl acetate