Showing structure for (1r,2r,7r,8s,9r,10r,13r,16s,17r)-11-ethyl-7,16-dihydroxy-13-methyl-6-methylidene-11-azahexacyclo[7.7.2.1⁵,⁸.0¹,¹⁰.0²,⁸.0¹³,¹⁷]nonadecan-4-one