Mycalolide A

(-)-Mycalolide A

(1E,3R,4R,5R,9S,10S,12S,13R,14S,16E,21S,23E,26R,27S)-4-O-Acetyl-21-O-de(aminocarbonyl)-23,24-didehydro-39,46-dinor-25-deoxy-25-oxokabiramide C