57074-49-4 Diethylhymenovin FURO(2',3':5,6)CYCLOHEPTA(1,2-c)PYRAN-2(3H)-ONE, DECAHYDRO-5,7-DIETHOXY-4a,9-DIM Furo(2',3':5,6)cyclohepta(1,2-c)pyran-2(3H)-one, decahydro-5,7-diethoxy-4a,9-dimethyl-3-methylene-