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): It belongs to the photochromic class of molecules.
user
COc1ccc(C2(c3ccc(OC)cc3)C=Cc3c4c(c5cc(CS)c(SC)cc5c3O2)-c2ccccc2C42CC3CCC2C3)cc1
assistant