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 organic light-emitting device. Please write the SMILES representation of it.
user
Cc1cc(-c2nc(-c3ccccc3)nc(-c3ccccc3)n2)ccc1N1c2ccccc2C(c2ccccc2)(c2ccc3c(c2)c2ccccc2n3-c2ccccc2)c2ccccc21
assistant