You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(E)-2-[[(Z)-heptadec-7-enoyl]amino]-3-[(11E,13E,15E)-octadeca-11,13,15-trienoyl]oxyheptadec-4-enyl] 2-(trimethylazaniumyl)ethyl phosphate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C57H105N2O7P
assistant