4-Methoxy(9-~2~H)-2,3,6a,9a-tetrahydrocyclopenta[c]furo[3′,2′:4,5]furo[2,3-h]chromene-1,11-dione

4-Methoxy(9-~2~H)-2,3,6a,9a-tetrahydrocyclopenta[c]furo[3′,2′:4,5]furo[2,3-h]chromen-1,11-dion

4-Methoxy(9-~2~H)-2,3,6a,9a-tetrahydrocyclopenta[c]furo[3′,2′:4,5]furo[2,3-h]chromene-1,11-dione

4-Méthoxy(9-~2~H)-2,3,6a,9a-tétrahydrocyclopenta[c]furo[3′,2′:4,5]furo[2,3-h]chromène-1,11-dione

Cyclopenta[c]furo[3′,2′:4,5]furo[2,3-h][1]benzopyran-1,11-dione-9-d, 2,3,6a,9a-tetrahydro-4-methoxy-