7,8,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthrene

7-(naphthalen-1-yl)bicyclo[3.2.0]hept-2-en-6-ol

optically inactive 3-methoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene

Δ1(1')-2-Carboxy-1,2-cyclopenteno-1,2,3,4-tetrahydro-phenanthren

2-Spiro-(1,2,3,4-tetrahydro-naphthyl-(1))-5-spiro-cyclopentyl-tetrahydrofuran