Synonyms: BRYOSTATIN 1;(1S,3S,5Z,7R,8E,11S,12S,13E,15S,17R,21R,23R,25S)-25-(ACETYLOXY)-1,11,21-TRIHYDROXY-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]NONACOS-8-EN-12-Y