methyl,chromen,furo[2,3-h]
Furo[2,3-h]
78506-30-62,3-dihydroxy-4-methoxy-2,3,6a,9a-tetrahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-h]chromene-1,11-dione
117859-29-7(6aS,7aS,8aR,8bR)-4-methoxy-2,3,6a,7a,8a,8b-hexahydrocyclopenta[c]oxireno[4',5']furo[3',2':4,5]furo[2,3-h]chromene-1,10-dione