You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 1-[1-(2-phenylpropyl)piperidin-4-yl]-3-[5-(1,2,4-triazol-4-yl)-1H-indol-3-yl]propan-2-one ?
user
C27H31N5O
assistant