You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(Z)-3-[(Z)-octadec-11-enoyl]oxy-2-[[(21Z,24Z)-triaconta-21,24-dienoyl]amino]heptadec-4-enyl] 2-(trimethylazaniumyl)ethyl phosphate is the IUPAC name of a molecule. Please give its molecular formula.
user
C70H133N2O7P
assistant