Synonyms: 9a,17a-Etheno-1H-benzo[c]cyclopenta[h]phthalazino[2,3-a]cinnoline-3-acetaldehyde, 8-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2,3,3a,4,5,5a,5b,6,7,8,9,11,16,17b-tetradecahydro-α,3a,5b-trimethyl-11,16-dioxo-, (αS,3R,3aR,5aR,5bR,8S,9aS,17aS,17bR)-