477-49-6 Furo(3',4':6,7)naphtho(2,3-d)-1,3-dioxole-5,8-dione, 5a,6,8a,9-tetrahydro-9-(3,4,5-trimethoxyphenyl)-, (5aR-(5aalpha,8abeta,9alpha))- Podophyllotoxone