You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is a cancer treatment and belongs to the pain treatment class of molecules.
user
COCCN1CC(NCNc2c(C)c(-c3cnc4c(c3)COC4)nn2-c2ccccc2)C(n2ccc(F)c2)C1
assistant