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