You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3S)-3-(3-methoxyphenyl)-N-[(1S)-2-methyl-1-(5-methyl-1H-1,2,4-triazol-3-yl)propyl]butanamide .
user
C18H26N4O2
assistant