[3,4,5-triacetyloxy-6-[[3,4,5-triacetyloxy-6-[5-acetyloxy-6-[[16-acetyloxy-14-hydroxy-10,13-dimethyl-17-(5-oxo-2H-furan-3-yl)-1,2,3,4,5,6,7,8,9,11,12,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-yl]oxy]-4-methoxy-2-methyloxan-3-yl]oxyoxan-2-yl]methox

5-acetyl-7,8-dihydro-6H-furo[3,2-c]azepin-4-one

5-acetyl-3-methyl-7,8-dihydro-6H-furo[3,2-c]azepin-4-one

5-acetyl-7,8-dihydro-6H-thieno[3,2-c]azepin-4-one

4-acetyl-7,8-dihydro-6H-thieno[3,2-b]azepin-5-one