23477-98-7 Antibiotic T-2636A Bundlin B NSC145117 Propanamide, N-[13-(acetyloxy)-7-hydroxy-1,4,10,19- tetramethyl-17,18-dioxo-16-oxabicyclo[13.2.2]nonadeca- 3,5,9,11-tetraen-2-yl]-2-oxo-, (1S-(1R*,2S*,3E,5E,7R*,9E, 11E,13R*,15S*,19S*))- Ro 23-0731/000 Sedecamycin T 2636A