Synonyms: Bryostatin 1,7-O-deacetyl-19,20-didehydro-20-de[(1-oxo-2,4-octadienyl)oxy]-19-deoxy-7-O-(2,2-dimethyl-1-oxopropyl)-,(21Z)-; Bryostatin 17; Propanoicacid, 2,2-dimethyl-,1,21-dihydroxy-17-[(1R)-1-hydroxyethyl]-5,13-bis(2-methoxy-2-oxoethylidene)-10,10,26,26-tetramethyl-19-oxo-18,27,28,29-tetraoxatetracyclo[21.3.1.13,7.111,15]nonacosa-8,11-dien-25-ylester, [1S-[1R*,3R*,5Z,7S*,8E,13Z,15R*,17S*(S*),21S*,23S*,25R*]]-