You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[4-ethyl-5-(pyrrolidin-1-ylmethyl)-1,2,4-triazol-3-yl]piperidin-1-yl]-2-propan-2-yloxyethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H33N5O2
assistant