Synonyms: 2-[(3-Allyl-8,8-dimethyl-4-oxo-3,6,8,9-tetrahydro-4H-pyrano[3',4':5,6]pyrido[2,3-d]pyrimidin-2-yl)sulfanyl]acetamide;Acetamide, 2-[[3,6,8,9-tetrahydro-8,8-dimethyl-4-oxo-3-(2-propen-1-yl)-4H-pyrano[3',4':5,6]pyrido[2,3-d]pyrimidin-2-yl]thio]-