You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[(E)-3-[(14Z,17Z,20Z)-hexacosa-14,17,20-trienoyl]oxy-2-[[(13Z,16Z,19Z,22Z)-octacosa-13,16,19,22-tetraenoyl]amino]heptadec-4-enoxy]-hydroxyphosphoryl]oxyethyl-trimethylazanium The above is the IUPAC name of a molecule. Write its molecular formula.
user
C76H138N2O7P+
assistant