27536-56-7 4-.alpha.-Phorbol 12,13-didecanoate 4-.alpha.-Phorbol didecanoate AIDS-001983 AIDS001983 Decanoic acid, (1aR,1bS,4aS,7aS,7bS,8R,9R,9aS)-1,1a,1b,4,4a,5,7a,7b,8,9-decahydro-4a,7b-dihydroxy-3-(hydroxymethyl)-1,1,6,8-tetramethyl-5-oxo-9aH-cyclopropa[3,4]benz[1,2-e]azulene-9,9a-diyl ester