英文别名5',5',5'',5''-Tetramethylhexahydro-1H-5'l7-dispiro[pentalene-2,2'-[1,3]dioxane-5',2''-[1,3]dioxane]; cis-bicyclo[3.3.0]octane-3,7-dione 3,7-bis(2',2'-dimethylpropylidene) acetal; Dispiro[1,3-dioxane-2,2'(1'H)-pentalene-5'(3'H),2''-[1,3]dioxane], tetrahydro-5,5,5'',5''-tetramethyl-, cis- 
