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(6S,7S,12R,E)-12-isopropyl-7-methyl-2-oxooxacyclododec-9-en-6-yl (2E,4Z,6E,8E,10E,12S,13S,15S)-12,13,15-tris((tert-butyldimethylsilyl)oxy)-4,6,10-trimethylhexadeca-2,4,6,8,10-pentaenoate
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(6S,7S,12R,E)-12-isopropyl-7-methyl-2-oxooxacyclododec-9-en-6-yl (2E,4E,6E,8E,10E,12S,13S,15S)-12,13,15-tris((tert-butyldimethylsilyl)oxy)-4,6,10-trimethylhexadeca-2,4,6,8,10-pentaenoate
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