1H-​Indeno[5,​4-​f]​quinoline-​7-​carboxamide, N-​(1,​1-​dimethylethyl)​-​2,​4a,​4b,​5,​6,​6a,​7,​8,​9,​9a,​9b,​10-​dodecahydro-​4a,​6a-​dimethyl-​2-​oxo-​, (4aR,​4bS,​6aS,​7S,​9aS,​9bS)​-​rel-