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 protein tyrosine kinase inhibitor and belongs to the anti tumor class of molecules. Please write the SMILES representation of it.
user
COC(=O)c1cccc(NC(=O)c2c(SSc3c(C(=O)Nc4cccc(C(=O)OC)c4)c4ccccc4n3C)n(C)c3ccccc23)c1
assistant