You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[(4-amino-5-cyclopropyl-1,2,4-triazol-3-yl)sulfanyl]-N-(3-methyl-1-phenylbutyl)acetamide into its molecular formula.
user
C18H25N5OS
assistant