Question: Finding complex valued roots

Can someone please help me to find first 5 coplex valued roots of the followind expression:

Frequency_Equation := -(2.220315292*10^21*I)*csgn(omega)*omega^4*sin(1.236117731*(omega^2)^(1/4))*cosh(1.236117731*(omega^2)^(1/4))-2.354665581*10^22*csgn(omega)*omega^3*sin(1.236117731*(omega^2)^(1/4))*cosh(1.236117731*(omega^2)^(1/4))-2.354665581*10^22*sinh(1.236117731*(omega^2)^(1/4))*csgn(omega)*omega^3*cos(1.236117731*(omega^2)^(1/4))-6.415296703*10^25*(omega^2)^(3/4)*cos(1.236117731*(omega^2)^(1/4))*cosh(1.236117731*(omega^2)^(1/4))-2.177438228*10^22*cosh(1.236117731*(omega^2)^(1/4))*(omega^2)^(3/4)*omega^2*cos(1.236117731*(omega^2)^(1/4))-5.946035576*10^21*omega^2*(omega^2)^(3/4)-6.415296702*10^25*(omega^2)^(3/4)-(3.560760000*10^24*I)*sinh(1.236117731*(omega^2)^(1/4))*omega^3*cos(1.236117731*(omega^2)^(1/4))+(3.560760000*10^24*I)*cosh(1.236117731*(omega^2)^(1/4))*omega^3*sin(1.236117731*(omega^2)^(1/4))-(2.613877239*10^21*I)*cosh(1.236117731*(omega^2)^(1/4))*(omega^2)^(3/4)*omega^3*cos(1.236117731*(omega^2)^(1/4))-(6.049258752*10^24*I)*(omega^2)^(3/4)*omega-1.907153069*10^25*sinh(1.236117731*(omega^2)^(1/4))*omega^2*sin(1.236117731*(omega^2)^(1/4))*(omega^2)^(1/4)-(2.220315292*10^21*I)*sinh(1.236117731*(omega^2)^(1/4))*csgn(omega)*omega^4*cos(1.236117731*(omega^2)^(1/4))-(6.049258753*10^24*I)*(omega^2)^(3/4)*cos(1.236117731*(omega^2)^(1/4))*cosh(1.236117731*(omega^2)^(1/4))*omega-3.500000000*10^21*cosh(1.236117731*(omega^2)^(1/4))*omega^4*sin(1.236117731*(omega^2)^(1/4))+3.500000000*10^21*sinh(1.236117731*(omega^2)^(1/4))*omega^4*cos(1.236117731*(omega^2)^(1/4))-2.156220000*10^25*sinh(1.236117731*(omega^2)^(1/4))*omega^2*cos(1.236117731*(omega^2)^(1/4))+2.156220000*10^25*cosh(1.236117731*(omega^2)^(1/4))*omega^2*sin(1.236117731*(omega^2)^(1/4));