Synonyms: 2-Butenoicacid, 3-methyl-, 7,8-dihydro-8,8-dimethyl-2-oxo-2H,6H-benzo[1,2-b:5,4-b']dipyran-6,7-diylester, (6R-trans)-; Crotonic acid, 3-methyl-, diester with7,8-dihydro-6,7-dihydroxy-8,8-dimethyl-2H,6H-benzo[1,2-b:5,4-b']dipyran-2-one,(-)- (8CI); Decursidin