(1R,2R,5S,6S)-4-(1,4-dimethoxy-5-(methoxymethoxy)naphthalen-2-yl)-3-(hydroxymethyl)-1-methyl-7-oxabicyclo[4.1.0]hept-3-ene-2,5-diyl diacetate

(1R,2R,5S,6S)-4-(1,4-dimethoxy-5-(methoxymethoxy)naphthalen-2-yl)-3-formyl-1-methyl-7-oxabicyclo[4.1.0]hept-3-ene-2,5-diyl diacetate

(1R,2R,5S,6S)-2,5-diacetoxy-4-(1,4-dimethoxy-5-(methoxymethoxy)naphthalen-2-yl)-1-methyl-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic acid

(7R,7aR,8aS,9S)-1-hydroxy-11-methoxy-7a-methyl-6-oxo-7,7a,8a,9-tetrahydro-6H-benzo[h]oxireno[2',3':4,5]benzo[1,2-c]chromene-7,9-diyl diacetate

(1aS,2S,10R,10aR)-7-hydroxy-3,8-dimethoxy-10a-methyl-9-oxo-1a,9,10,10a-tetrahydro-2H-benzo[6,7]fluoreno[2,3-b]oxirene-2,10-diyl diacetate