You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2-heptadecanoyloxy-3-pentadecanoyloxypropyl) (26Z,29Z,32Z,35Z)-octatriaconta-26,29,32,35-tetraenoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C73H134O6
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