You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is photochromic.
user
CC(C)CCCC(C)C1CCC2C3CC=C4CC(OC(=O)C(Cl)(Cl)Cl)CCC4(C)C3CCC12C
assistant