You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? This molecule is a member of the high luminous efficiency class, known to influence low driving voltage and affect luminous efficiency. It belongs to the phosphorescent, organic electroluminescent compound, and electroluminescent classes of molecules and impacts improved driving voltage.
user
C1=C(c2ccccc2)CCC(n2c3ccccc3c3ccc(-c4cccc(-c5ccccc5)c4)cc32)=C1
assistant