120901-49-7 4-Deacetyl-4-O-isobutyrylkinamycin C Propanoic acid, 2-methyl-, 1,2-bis(acetyloxy)-5-cyano-2,3,4,5,6,11-hexahydro-3,7-dihydroxy-3-methyl-6,11-dioxo-1H-benzo(b)carbazol-4-yl ester, (1S-(1-alpha,2-beta,3-alpha,4-alpha))-