You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-N-(4,5-dihydro-1,3-thiazol-2-yl)-2-[(4-ethyl-5-pyridin-3-yl-1,2,4-triazol-3-yl)sulfanyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H18N6OS2
assistant