You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (E)-3-[4-chloro-2-[(5-methyltetrazol-2-yl)methyl]phenyl]-1-[(2R)-2-methylpiperidin-1-yl]prop-2-en-1-one .
user
C18H22ClN5O
assistant