You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-acetamidophenyl)-2-[(6-thiophen-2-yl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)sulfanyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H16N6O2S2
assistant