Synonyms: Furo[2',3':5,6]cyclohepta[1,2-c]pyran-2,5-dione,3,3aa,4,4a,7,8,8aa,9,10,10aa-decahydro-4ab,9a-dimethyl-3-methylene-, (+)- (8CI);Furo[2',3':5,6]cyclohepta[1,2-c]pyran-2,5-dione,decahydro-4a,9-dimethyl-3-methylene-, [3aR-(3aa,4ab,8aa,9a,10aa)]-; Greenein