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 optoelectronic device and phosphorescent, belonging to the electroluminescent device class of molecules, and is electroluminescent.
user
c1ccc2c(c1)nc1sc3c(-c4cnc5c6ncc(-c7ccc8c9cc(-c%10cccc%11c%10nc%10oc%12ccccc%12n%10%11)ccc9c9ccccc9c9nc%10c%11nccnc%11c%11nccnc%11c%11nccnc%11c%10nc9c8c7)nc6c6nc7c8ccccc8c8ccccc8c8ccccc8c7nc6c6nccnc6c5n4)cccc3n12
assistant