2-(4-Acetoxy-3-chloro-1-butynyl)-5-(1,3-pentadiynyl)thiophene;2-Chloro-4-[5-(1,3-pentadiynyl)-2-thienyl]-3-butyne-1-ol acetate;Acetic acid 2-chloro-4-[5-(1,3-pentadiynyl)-2-thienyl]-3-butynyl ester
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