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 [3-heptadecanoyloxy-2-[(8Z,11Z,14Z)-heptadeca-8,11,14-trienoyl]oxypropyl] (7Z,10Z,13Z,16Z)-nonadeca-7,10,13,16-tetraenoate .
user
C56H94O6
assistant