furaquinocin A

(2R,3S)-2,3-Dihydro-4-hydroxy-3-[(1R,3Z)-1,5-dihydroxy-4-methyl-3-pentenyl]-2,3,8-trimethyl-7-methoxynaphtho[1,2-b]furan-6,9-dione

(2R)-2α,3,8-Trimethyl-3α-[(1R,3Z)-1,5-dihydroxy-4-methyl-3-pentenyl]-4-hydroxy-7-methoxy-2,3,6,9-tetrahydronaphtho[1,2-b]furan-6,9-dione