Synonyms: Cyclopenta[cd]dicyclopropa[a,f]pentalene,dodecahydro-,(2a-alpha-,2b-bta-,3a-bta-,3b-alpha-,3c-bta-,4a-bta-,4b-alpha-,4c-alpha-)-(9CI);Cyclopenta[cd]dicyclopropa[a,f]pentalene, dodecahydro-, (2a-alpha-,2b-ba-,3a-ba-,3b-alpha-,3c-ba-,4a-ba-,4b-alpha-,4c-alpha-)- (9CI)