You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a erk inhibitor.
user
Cn1nccc1Nc1cc(-c2cc(NC=O)n(Cc3cc(F)c(F)cc3CO)c2)c(Cl)cn1
assistant