You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[2-(3-cyclopropyl-1,2,4-triazol-4-yl)ethyl]-4-methyl-2-propyl-1,3-thiazole-5-carboxamide into its molecular formula.
user
C15H21N5OS
assistant