L. (5R,5aR8aR,9S)-9-hydroxy-5-(4-hydroxy-3,5-dimethoxyfenyl)-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][1,3]benzodioxol-6(5aH)-on (4ˊ-0-demethylpodofylotoxin),