You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-[(19Z,22Z)-triaconta-19,22-dienoyl]oxy-3-tritetracontanoyloxypropoxy]-2-[2-(trimethylazaniumyl)ethoxy]acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C83H159NO8
assistant