You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 5-[N-[2-(2-methoxyethoxy)ethyl]-N'-methylcarbamimidoyl]sulfanylpentyl N-[2-(2-methoxyethoxy)ethyl]-N'-methylcarbamimidothioate .
user
C19H40N4O4S2
assistant