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 calcium receptor antagonist.
user
CCOC(=O)CCc1cccc(N)c1OCC(O)CNC(C)(C)CC1Cc2ccccc2C1
assistant