You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a electroluminescent member of the organic electroluminescent device class. Please write the SMILES representation of it.
user
O=c1c2ccccc2n(-c2ccc(-n3c4ccccc4c4c(-c5ccccc5)cccc43)cc2)c(=O)n1-c1ccc(-n2c3ccccc3c3cc(-c4ccccc4)ccc32)cc1
assistant