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 electroluminescent device and is electroluminescent. Please represent the molecule in SMILES.
user
c1ccc(-c2ccc(N(c3ccc4c(c3)oc3cc(N(c5cccc(-c6ccccc6)c5)c5cccc6c5oc5c(C7CCCCC7)cccc56)c5ccccc5c34)c3cccc4c3oc3c(C5CCCCC5)cccc34)cc2)cc1
assistant