You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a organic light-emitting device. Please represent the molecule in SMILES.
user
c1ccc(-c2ccc(-c3c4ccccc4c(-c4ccc(-c5ccc6cc7c(cc6c5)sc5c7ccc6oc7ccccc7c65)cc4)c4ccccc34)cc2)cc1
assistant