Showing structure for 12-ethyl-20-hydroxy-5-methyl-19-methylidene-10-oxa-12-azaheptacyclo[16.2.1.0¹,¹⁵.0²,¹³.0⁴,¹⁴.0⁵,¹¹.0⁸,¹⁴]henicosan-17-yl acetate