Showing structure for (1s,2r,3r,4s,5s,6s,8r,9s,10s,13s,16s,17r,18r)-11-ethyl-13-(hydroxymethyl)-6,8-dimethoxy-11-azahexacyclo[7.7.2.1²,⁵.0¹,¹⁰.0³,⁸.0¹³,¹⁷]nonadecane-4,9,16,18-tetrol