You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methylsulfanyl-6-nitro-8H-[1,2,4]triazolo[5,1-c][1,2,4]triazin-7-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C5H6N6O3S
assistant