12-O-Tigloyl-4-deoxyphorbol 13-isobutyrate 2-Butenoic acid, 2-methyl-, 1a,1b,4,4a,5,7a,8,9,9a-decahydro-7b-hydroxy-3-(hydroxymethyl)-9a-(isobutyryloxy)-5-oxo-1,1,6,8-tetramethyl-1H-cyclopropa(3,4)benz(1,2-e)azulen-9-yl ester EM9252350