You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a osteoporosis treatment.
user
CC12CC=C3C4=C(CCC3C1CCC2O)CC1(CC4)OCCO1
assistant