You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a calcium receptor antagonist.
user
CCOC(=O)CCc1ccc(OCC(O)CNC(C)(C)Cc2ccc3c(c2)CCCC3)c(C#N)c1
assistant