First, please respond to the list.
Second, if you follow the 3-step program that I provided to you, you should be in a better position than I am to answer the question.
Finally, if all you want is to obtain the answer 3000 MPa, I suggest add the following line to your script:
print “Elastic modulus of vinyl ester = 3000 MPa”
But this is not a good use of LAMMPS.