You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [3-[(3Z,6Z,9Z)-dodeca-3,6,9-trienoyl]oxy-2-[(8Z,11Z,14Z)-heptadeca-8,11,14-trienoyl]oxypropyl] (7Z,9E,11Z,13Z,15Z,17Z)-icosa-7,9,11,13,15,17-hexaenoate into molecular formula.
user
C52H76O6
assistant