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: The molecule is organic light-emitting.
user
Cc1nc(-n2c3ccccc3c3cc4c5ccccc5n5c6ccccc6c(c32)c45)nc2ccccc12
assistant