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 a organic light-emitting device.
user
c1ccc(-c2nnc(-c3cccc4c3c3ccccc3n4-c3cccc(-c4cccc(-n5c6ccccc6c6cc7c(cc65)oc5ccccc57)c4)c3)n2-c2ccccc2)cc1
assistant