Question: Please i do i remove the "error of missing operator" to allow the program to run smoothly?

Warning, The imaginary unit, I, has been renamed _I

#
# Set up numerical values for all problem parameters
#
  params:=[       gamma=0.142,        tau=0.112,      mu[1]=0.4e-3,
                  beta[1]=0.081,  b[h]=10,  psi=0.011, phi=0.05
            epsilon=0.2e-2,     rho=0.5e-1, beta[2]=0.092, beta[o]=0.034
                    q=.5,      eta=0.213,   M[h]=100
              delta=0.021,       alpha=0.57e-1,   p=.2,   beta[k]=0.025
               omega=0.056,      mu[c]=0.0019,  (mu)^(2)[1]=0.091
          ]:

Error, missing operator or `;`

#
# Define main function
# R := sqrt((omega+mu[1]+eta)*mu[1]*mu[c]*psi*beta[o]*M[h]^2*(delta+mu[1]+eta+phi[1])*(`ε`+mu[1])*omega*beta[k]*   (1/((omega+mu[1]+eta)*(`ε`+mu[1])*mu^2)))
 

#
# Compute "all" derivatives and evaluate numerically.