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 [3-[(9Z,12Z)-heptadeca-9,12-dienoyl]oxy-2-[(9Z,12Z,15Z,18Z,21Z)-tetracosa-9,12,15,18,21-pentaenoyl]oxypropyl] (21Z,24Z)-dotriaconta-21,24-dienoate .
user
C76H130O6
assistant