You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is photochromic.
user
Cc1cccc(C2(c3ccccc3)C=Cc3c(ccc4c5c(ccc34)OC(C)C5)O2)c1
assistant