You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a phosphorescent. Please represent the molecule in SMILES.
user
Brc1ccc2c(c1)Cc1ccc(N(c3ccccc3)c3ccc4c(ccn4-c4cccc(-c5ccc(N(c6cccc(-c7cccc8cc(N(c9ccc%10c(c9)oc9cc(Br)ccc9%10)c9ccc%10sc%11ccccc%11c%10c9)ccc78)c6)c6ccc7c(c6)sc6cc(Br)ccc67)c6ccccc56)c4)c3)cc1-2
assistant