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 anti cancer class of molecules. Please write the SMILES representation of it.
user
O=C1COC(c2ccc(NC3CCc4ccccc43)c(C(F)(F)F)c2)=NN1
assistant