... ,hexahydro-3a,7a-dimethyl-, (3aa,4b,7b,7aa)-;7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylicanhydride, 2,3-dimethyl- (8CI); Cantharidin (6CI,7CI);1 ... ; Hexahydro-3a,7a-dimethyl-4,7-epoxyisobenzofuran-1,3-dione;Kantaridin; NSC 61805; exo-1,2-cis-Dimethyl-3,6-epoxyhexahydrophthalicanhydride Molecular ...