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: It belongs to the organic light-emitting device class of molecules. Please write the SMILES representation of it.
user
C=CC=CCC(C)C(=C(C=CC)n1c2c(c3cc(C(=C)C=CC=CC)ccc31)CC=C(c1ccccc1)C=C2)c1nc(C2=CCCC=C2)nc(-c2ccccc2)n1
assistant