You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [3-[(7Z,9Z,11Z,13Z)-hexadeca-7,9,11,13-tetraenoyl]oxy-2-[(Z)-octadec-11-enoyl]oxypropyl] (11Z,14Z)-icosa-11,14-dienoate by IUPAC nomenclature, provide its molecular formula.
user
C57H96O6
assistant