1-Piperidinyloxy, 4-(((5,6,7,8-tetrahydro-8-hydroxy-7-(hydroxymethyl)-5-(3,4,5-trimethoxyphenyl)naphtho(2,3-d)-1,3-dioxol-6-yl)carbonyl)hydrazono)-2,2,6,6-tetramethyl-, (5-alpha,6-beta,7-alpha,8-beta)- 85339-54-4 Podophyllic acid piperidyl hydrazone nitroxide radical