colabomycin A

(2E,4E,6Z,8E)-N-[(1S)-5β-Hydroxy-5-[(1E,3E,5E,7E)-9-[(2-hydroxy-5-oxo-1-cyclopenten-1-yl)amino]-9-oxo-1,3,5,7-nonatetrenyl]-2-oxo-7-oxabicyclo[4.1.0]hept-3-en-3-yl]-2,4,6,8-decatetrenamide