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 mek inhibitor and belongs to the anti tumor class of molecules.
user
CC1(NS(=O)(=O)Nc2cccc(Cc3cc(C(N)=O)c(Nc4ccc(I)cc4F)c(F)c3F)c2F)CCC1
assistant