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