You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(10Z,13Z,16Z)-docosa-10,13,16-trienoyl]oxy-3-[(4Z,7Z,10Z,13Z)-hexadeca-4,7,10,13-tetraenoyl]oxypropyl] (25Z,28Z)-hexatriaconta-25,28-dienoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C77H132O6
assistant