Showing structure for 5,11-dihydroxy-9,16-dimethyl-10-oxo-8-(6-oxopyran-3-yl)-15,17,20-trioxahexacyclo[14.3.1.1¹⁴,¹⁸.0¹,¹³.0⁴,¹².0⁵,⁹]henicosane-13-carbaldehyde