100996-13-2
17-oxo-16-(3-oxo-butyl)-16,17-dihydro-15H-cyclopenta[a]phenanthrene-16-carboxylic acid methyl ester
→
100145-97-9
9,10,10a,11-tetrahydro-indeno[2,1-a]phenanthren-8-one
220-97-3
11H-萘并[2,1-a]芴