76902-35-7 (3R,5S,6aS,10aR)-5-(3-Furyl)-4,5,6,6aβ-tetrahydro-8α-methylspiro[furan-3(2H),7(8H)-naphtho[1,8a-c]furan]-2,3,10(5H,9H)-trione 7690-37-1 (2R)-2-[(1S)-1,2-dihydroxyethyl]-4,5-dihydroxy-furan-3-one, (3R,4S,5S, 6R,7R,9R,11R,12R,13R,14R)-6-[(2S,3R,4S,6R)-4-dimethylamino-3-hydroxy-6 -methyl-oxan-2-yl]oxy-14-ethyl-7,12,13-trihydroxy-4-[(2S,4R,5S,6S)-5-h ydroxy-4-methoxy-4,6-dimethyl-oxan-2-yl]ox