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