You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 3-[[2-tert-butyl-5-[(4-fluorophenoxy)methyl]-1,2,4-triazol-3-yl]methyl]-4-ethylpiperazin-2-one is given. What is its corresponding molecular formula?
user
C20H28FN5O2
assistant