{HEAD ~ The working medium} of the present invention is useful as a working medium for heat cycle such as {TAIL ~ a refrigerant} for a refrigerator, a refrigerant for an air conditioner, a working fluid for power generation system , a working medium for a latent heat transport apparatus or a secondary cooling medium 
{ HEAD ~ The working medium } of the present invention is useful as a working medium for heat cycle such as { TAIL ~ a refrigerant } for a refrigerator , a refrigerant for an air conditioner , a working fluid for power generation system , a working medium for a latent heat transport apparatus or a secondary cooling medium
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