You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2,3-dihydro-1H-isoindol-5-ylmethyl)-3-(3-phenyl-2-pyridin-2-ylpropyl)urea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H26N4O
assistant