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-[(Z)-hexadec-9-enoyl]oxy-2-[(Z)-octadec-9-enoyl]oxypropyl] (Z)-hexatriacont-25-enoate .
user
C73H136O6
assistant