You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[(5-propyl-[1,2,4]triazino[5,6-b]indol-3-yl)sulfanylmethyl]-3-thiophen-2-yl-1,2,4-oxadiazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H16N6OS2
assistant