Synonyms: (6aR-cis)-1,2,3,6a,9a,11-Hexahydro-4-methoxy-1,11-dioxocyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-5-carboxaldehyde;1,2,3,6a,9a,11-Hexahydro-4-methoxy-1,11-dioxocyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-5-carboxaldehyde (6aR-cis)-;51541-43-6;Cyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-5-carboxaldehyde, 1,2,3,6a,9a,11-hexahydro-4-methoxy-1,11-dioxo-, (6aR-cis)-