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
c1ccc2cc3c(cc2c1)c1ccc2ccccc2c1n3-c1ccc(-c2nc(-c3cccc4oc5ccccc5c34)nc(-c3cccc4oc5ccccc5c34)n2)cc1-c1cccc2sc3ccccc3c12
assistant