You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a fgfr4 inhibitor and belongs to the cancer treatment class of molecules.
user
COCCNc1cc(NC(=O)N2CCCc3cc(CN4CCOC5(CC5)C4=C=O)c(C=O)nc32)ncc1C#N
assistant