I'm a doctor in a hospital, alone, with 5 patients in my care..

I'm a doctor in a hospital, alone, with 5 patients in my care, each of whom are deathly ill, and each of whom needs a single organ to survive. In walks the Domino's pizza delivery guy. I know he's a match for all of my patients, and I think it's very likely that I can chloroform him and cut him up for parts, saving the lives of my five patients. (I also think that I can dispose of the remains of the body without getting caught.) What should I do and why?

If I was a doctor, I think I should not do it like that, I should not cut him up for parts even if I can save the lives of any of my patient or all of my five patients. I should try another way better to save their lives.

Because I think every life does matter equally. Pizza guy or rich patient, it does not matter. Even in this scenario, I could help patient to live, by killing another people easily and without another knowing, but that people does not know anything, and he has the right to live also.

I do not think I can judge that who can survive or who should die for another. If he does not consent to donate his organ to the others by his/her intention, so I could not decide to do anything with his/her life.

Because every life have value of their own, even five life or one life in this case are equal.