You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(Z)-3-[(13Z,16Z,19Z,22Z)-octacosa-13,16,19,22-tetraenoyl]oxy-2-[[(Z)-octadec-11-enoyl]amino]octadec-4-enyl] 2-(trimethylazaniumyl)ethyl phosphate is the IUPAC name of a molecule. Please give its molecular formula.
user
C69H127N2O7P
assistant