You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[(5-tert-butyl-2-phenylpyrazol-3-yl)amino]-2-oxoethyl]-N-ethylfuran-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H26N4O3
assistant