You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [2-[(8Z,11Z,14Z,17Z)-icosa-8,11,14,17-tetraenoyl]oxy-3-[(3Z,6Z,9Z,12Z,15Z)-octadeca-3,6,9,12,15-pentaenoyl]oxypropyl] (14Z,17Z,20Z)-octacosa-14,17,20-trienoate .
user
C69H110O6
assistant