You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[2-[2-(6-fluoro-1H-benzimidazol-2-yl)ethylamino]ethyl]-N-[(3-fluoropyridin-2-yl)methyl]-1,3-oxazole-4-carboxamide .
user
C21H20F2N6O2
assistant