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 [2-hydroxy-3-[hydroxy-[2-hydroxy-3-[hydroxy-[2-hydroxy-3-[(11E,13E,15E)-octadeca-11,13,15-trienoyl]oxypropoxy]phosphoryl]oxypropoxy]phosphoryl]oxypropyl] (5Z,8Z,11Z,14Z,17Z)-icosa-5,8,11,14,17-pentaenoate .
user
C47H78O15P2
assistant