You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(2S)-2-[(2-chlorophenyl)methyl]morpholin-4-yl]-4-(1,2,4-triazol-1-yl)butan-1-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H21ClN4O2
assistant