You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(7Z,9Z,11Z,13Z)-hexadeca-7,9,11,13-tetraenoyl]oxy-3-pentadecanoyloxypropyl] (9Z,11Z,13Z,15Z)-henicosa-9,11,13,15-tetraenoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C55H90O6
assistant