J. (5R,5aR,8aR,9S)-5-(4-hydroxy-3,5-dimethoxyfenyl)-9-methoxy-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][ ,3]benzodioxol-6(5aH)-on (4ˊ-O-demethyl-1 -O-methylepipodofylotoxin),
J. (5R,5aR,8aR,9S)-5-(4-hydroxy-3,5-dimethoxyfenyl)-9-methoxy-5,8,8a,9-tetrahydroisobenzofuro[5,6-f][ ,3]benzodioxol-6(5aH)-on (4ˊ-O-demethyl-1 -O-methylepipodofylotoxin),