4,24-Dioxa-3,25-disilaheptacosa-9,11,15,17,21-pentaen-7-ol,19-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-16-ethyl-2,2,3,3,6,8,10,14,20,25,25,26,26-tridecamethyl-5-[(1S)-1-methylpropyl]-,(5R,6R,7R,8R,9E,11E,14R,15Z,17E,19R,20R,21Z)-
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But-2-yne 82252-88-8