Showing structure for 4-ethyl-16-methoxy-10-(methoxymethyl)-6-oxa-4-azaheptacyclo[15.2.1.0²,⁷.0²,¹¹.0³,¹³.0⁵,¹⁰.0¹⁴,¹⁹]icosane-13,14,18-triol