Complex Numbers

If \(1, \alpha_1, \alpha_2, \alpha_3\) and \(\alpha_4\) are the roots of \(z^5-1=0\) and \(\omega\) is a cube root of units, then \((\omega-1)\left(\omega-\alpha_1\right)\left(\omega-\alpha_2\right)\left(\omega-\alpha_3\right)\left(\omega-\alpha_4\right)+\omega\) is equal to