1 6ZY 2,3,5-trimethyl-6-[3-oxo-3-(piperidin-1-yl)propyl]-7h-furo[3,2-G][1]benzopyran-7-one 1.000 2 6ZE 2,3,5-trimethyl-6-propyl-7h-furo[3,2-G][1]benzopyran-7-one 0.741