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system
Provide the molecular formula for the IUPAC named substance (3E,5E)-4-methoxy-2-N-methyl-5-N-[1-[(1E)-2,7,8-trimethylcyclooct-1-en-4-yn-1-yl]oxyethenyl]hepta-1,3,5-triene-2,5-diamine .
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