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 [(E)-2-[[(9Z,11E,13E)-hexadeca-9,11,13-trienoyl]amino]-3-[(Z)-octadec-11-enoyl]oxyheptadec-4-enyl] 2-(trimethylazaniumyl)ethyl phosphate .
user
C56H103N2O7P
assistant