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 6-[2-[(4-cyclopropyl-5-thiophen-2-yl-1,2,4-triazol-3-yl)sulfanyl]acetyl]-3,4-dihydro-1H-quinolin-2-one ?
user
C20H18N4O2S2
assistant