Etoposide EP Impurity E

Chemical Name: (5R,5aR,8aR,9S)-9-hydroxy-5-(4-hydroxy-3,5-dimethoxyphenyl)-5,8,8a,9-tetrahydro[2]benzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one (4′-desmethylepipodophyllotoxin)

Smile: O=C1[C@@]([C@H](C2=CC(OC)=C(O)C(OC)=C2)C3=C4C=C(OCO5)C5=C3)([H])[C@]([C@@H]4O)([H])CO1