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)-hexadeca-9,12-dienoyl]oxy-2-[(9Z,12Z)-octadeca-9,12-dienoyl]oxypropyl] (20Z,23Z,26Z,29Z,32Z,35Z)-octatriaconta-20,23,26,29,32,35-hexaenoate .
user
C75H126O6
assistant