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 and belongs to the light-emitting class of molecules. Please represent the molecule in SMILES.
user
c1ccc(-c2ccc(-c3cc(-c4ccccc4)nc(-n4c5ccccc5c5c6sc(-c7ccccc7)c(-c7ccccc7)c6ccc54)c3)cc2)cc1
assistant