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 has Rosin. When heated to decomp, emits acrid smoke.
user
CC(C)C1=CC2=CCC3C(C)(C(=O)[O-])CCCC3(C)C2CC1.CC(C)C1=CC2=CCC3C(C)(C(=O)[O-])CCCC3(C)C2CC1.[Ca+2]
assistant