Showing structure for (1s,12r,13r,14r)-18,19-dimethoxy-13,14-dimethyl-20-oxo-3,6,8-trioxapentacyclo[9.9.1.0¹,¹⁶.0⁴,²¹.0⁵,⁹]henicosa-4,9,11(21),16,18-pentaen-12-yl acetate