You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[2-[(17Z,20Z,23Z,26Z,29Z)-dotriaconta-17,20,23,26,29-pentaenoyl]oxy-3-[(12Z,15Z,18Z)-hexacosa-12,15,18-trienoyl]oxypropoxy]-2-[2-(trimethylazaniumyl)ethoxy]acetate by IUPAC nomenclature, provide its molecular formula.
user
C68H117NO8
assistant