You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-[(5Z,8Z,11Z,14Z,17Z,20Z,23Z)-hexacosa-5,8,11,14,17,20,23-heptaenoyl]oxy-2-[(12Z,15Z,18Z,21Z,24Z,27Z,30Z,33Z)-hexatriaconta-12,15,18,21,24,27,30,33-octaenoyl]oxypropoxy]-2-[2-(trimethylazaniumyl)ethoxy]acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C72H111NO8
assistant