(2S)-1,2,3,4,4a,4bα,5,6,6a,7,14,14aα,14bβ,15,16,16aα-Hexadecahydro-4aβ,6aβ-dimethylbenzo[e]naphth[2,1:4,5]indeno[1,2-b]indol-2β-ol acetate