61557-88-8 Butanoic acid, (1aR,1bS,4aR,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 Butanoic acid, diester with 1,1a,1b,4,4a,7a,7b,8,9,9a-decahydro-4a,7b,9,9a-tetrahydro-3-(hydroxymethyl)-1,1,6,8-tetramethyl-5H-cyclopropya(3,4)benz(1,2-e)azulen-5-one, (1aR-(1aalpha,1bbeta,4abeta,7aalpha,7balpha,8alpha,9beta,9aalpha))- Phorbol dibutyrate