30809-23-5

(7aS,9E)-9-Ethylidene-5,6,7,7aα,8,8aα,9,10-octahydro-12β-acetoxy-7-acetylindolo[3,2,1-ij]pyrano[3,4-b][1,5]naphthyridine-12aα(12H)-carboxylic acid methyl ester