3-Demethylcolchicine glucoside Acetamide, N-[(7S)-3-(.beta.-D-glucopyranosyloxy)- 5,6,7,9-tetrahydro-1,2,10-trimethoxy-9-oxobenzo[a]heptalen-7-yl]- Acetamide, N-[3-(.beta.-D-glucopyranosyloxy)- 5,6,7,9-tetrahydro-1,2,10-trimethoxy-9-oxobenzo[a]heptalen-7-yl]-, (S)- Colchicoside NSC624672