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(2Z,4Z)-Hepta-2,4-dienoic acid {(E)-3-[(E)-(7S,9R,10S)-4,9-bis-(tert-butyl-dimethyl-silanyloxy)-10-methyl-5-oxo-7,8,9,10,11,14-hexahydro-5H-6-oxa-benzocyclododecen-7-yl]-propenyl}-amide
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1,3-Bis-{(E)-3-[(E)-(7S,9R,10S)-4,9-bis-(tert-butyl-dimethyl-silanyloxy)-10-methyl-5-oxo-7,8,9,10,11,14-hexahydro-5H-6-oxa-benzocyclododecen-7-yl]-propenyl}-1-((2Z,4Z)-hepta-2,4-dienoyl)-urea
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