You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a fgfr4 inhibitor and belongs to the cancer treatment class of molecules.
user
CC#Cc1cnc(NC(O)N(C)c2ccc(CN3CCN(C)CC3=O)c(C=O)n2)cc1NC1CC1
assistant