You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-[(10Z,13Z,16Z,19Z)-docosa-10,13,16,19-tetraenoyl]oxy-3-nonanoyloxypropan-2-yl] docosanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C56H100O6
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