You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (5-ethyl-1,3-oxazol-4-yl)-[(3S)-3-(1-pyrimidin-2-ylpiperidin-4-yl)pyrrolidin-1-yl]methanone is given. What is its corresponding molecular formula?
user
C19H25N5O2
assistant