You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 5-cyclopropyl-4-phenyl-2-[[(2R)-2-pyridin-3-ylpyrrolidin-1-yl]methyl]-1,2,4-triazole-3-thione ?
user
C21H23N5S
assistant