You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(13Z,16Z)-docosa-13,16-dienoyl]oxy-3-[(9Z,12Z)-hexadeca-9,12-dienoyl]oxypropyl] (12Z,15Z,18Z,21Z)-tetracosa-12,15,18,21-tetraenoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C65H110O6
assistant