You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[(E)-3-[(17Z,20Z)-hexacosa-17,20-dienoyl]oxy-2-[[(16Z,19Z,22Z)-octacosa-16,19,22-trienoyl]amino]heptadec-4-enoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C76H142N2O7P+
assistant