4'-Demethylpodophyllotoxin 40505-27-9 5,8,8a,9,-Tetrahydro-9-hydroxy-5-(4-hydroxy-3,5-dimethoxyphenyl)furo[3',4':6,7]naphtho[2,3-d]-1,3-dioxol-6(5aH)-one AIDS-006790 AIDS006790