28268-50-0 5-18-12-00135 (Beilstein Handbook Reference) Antibiotic T 2636C 14-propionate BRN 1696025 Lankacidin C 14-propionate Pyruvamide, N-(7,13-dihydroxy-1,4,10,19-tetramethyl-17,18-dioxo-16-oxabicyclo(13.2.2)nonadeca-3,5,9,11-tetraen-2-yl)-, 13-propionate, (all-E)-(1S,2R,7S,13S,15R,19R)-(-)-