You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: It belongs to the photochromic class of molecules.
user
CC1(C)c2cc(C(F)(F)F)ccc2-c2c1c1c(c3ccc(Br)cc23)OC(c2ccc(F)cc2)(c2ccc(N3CCCCC3)cc2)C=C1
assistant