4-pentacyclo[8.4.0.02,7.03,12.06,11]tetradecanone

Pentacyclo[5.5.1.11,5.03,8.010,13]tetradecan-11-on

6,6,10,10-tetramethylpentacyclo[5.3.0.02,5.03,9.04,8]decane

dispiro[cyclopropan-5,1'-endo-tricyclo[5.2.1.02,6]decan-10,1''-cyclopropane]

binor S