You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a cgrp antagonist and belongs to the cgrpantagonists class of molecules.
user
CCCCOC(=O)c1ccc(N2CCN(C(=O)C(Cc3cc(Cl)c(N)c(C(F)(F)F)c3)OC(=O)N3CCC(n4nc(-c5ccccc5)[nH]c4=O)CC3)CC2)nc1
assistant