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-[(Z)-heptadec-9-enoyl]oxy-2-[(8Z,11Z,14Z,17Z,20Z,23Z)-hexacosa-8,11,14,17,20,23-hexaenoyl]oxypropyl] (Z)-triacont-19-enoate .
user
C76H132O6
assistant