Showing structure for (2r,3r,4s,5s,6r,7r,8r,13s,16s,17r,18r)-11-ethyl-6,18-dimethoxy-13-(methoxymethyl)-11-azahexacyclo[7.7.2.1²,⁵.0¹,¹⁰.0³,⁸.0¹³,¹⁷]nonadecane-4,7,8,16-tetrol