You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is estrogen receptor modulator.
user
COC(=O)CC1CCN(C2=NC(=O)C(=Cc3ccc(Oc4ccc(C#N)cc4C(F)(F)F)c(OC)c3)S2)CC1
assistant