You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [3-docosanoyloxy-2-[(10Z,13Z,16Z,19Z)-docosa-10,13,16,19-tetraenoyl]oxypropyl] (14Z,17Z,20Z,23Z)-hexacosa-14,17,20,23-tetraenoate by IUPAC nomenclature, provide its molecular formula.
user
C73H126O6
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