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 [2-[(9Z,12Z)-nonadeca-9,12-dienoyl]oxy-3-[(Z)-pentadec-9-enoyl]oxypropyl] (15Z,18Z)-hexacosa-15,18-dienoate .
user
C63H112O6
assistant