You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a phosphorescent and belongs to the electroluminescent class of molecules, known to have an effect on electron transport.
user
CC1(C)c2ccccc2-c2ccc(-c3c4c(c(-c5ccc6c(c5)C(C)(C)c5ccccc5-6)c5cc(-c6ccc(N7C(c8ccccc8)=CCC7C7C=CC=CC7)cc6)ccc35)=CCCC=4)cc21
assistant