Synonyms: 4,6-Methanocyclobuta[cd]cyclopropa[3,4]benzo[1,2-a]pentalen-5(1H)-one,1a,2,3,3a,3ba,4,5a,5b,6,6aa,6bb,6ca-dodecahydro-1aa,2b,3aa,4b-tetrahydroxy-6b-(hydroxymethyl)-1,1,3a,5aa-tetramethyl- (8CI);4,6-Methanocyclobuta[cd]cyclopropa[3,4]benzo[1,2-a]pentalen-5(1H)-one,dodecahydro-1a,2,3a,4-tetrahydroxy-6-(hydroxymethyl)-1,1,3,5a-tetramethyl-, (1aa,2b,3a,3aa,3ba,4b,5aa,5ba,6b,6aa,6bb,6ca)-; Lumiphorbol