Showing structure for 7,10-dihydroxy-1,14,18,18-tetramethyl-2-oxa-6-azapentacyclo[11.8.0.0³,¹¹.0⁴,⁸.0¹⁴,¹⁹]henicosa-3,6,8,10-tetraen-17-yl acetate