Synonyms: 5a-Pregn-3-eno[4,3-b][1,4]oxazepin-7'(4aH)-one, 20a-(dimethylamino)-3a,4',5',6'-tetrahydro-6'-isopropylidene-(8CI); Pachysantermine A (7CI);6H-Cyclopenta[7,8]phenanthro[1,2-b][1,4]oxazepine,pregn-3-eno[4,3-b][1,4]oxazepin-7'(4'H)-one deriv.