Showing structure for 3,5-dihydroxy-2,7-dimethyl-6-oxo-15-oxa-9-azahexacyclo[12.6.1.0²,¹¹.0³,⁹.0⁵,²⁰.0¹⁸,²¹]henicosa-1(20),14(21),18-trien-19-yl acetate