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In the energy range of 0.1-300 GeV, the highest flux measured by {\\it Fermi}-Large Area Telescope is (3.90 $\\pm$ 1.52) $\\times$ 10$^{-6}$ ph cm$^{-2}$ s$^{-1}$, which is the highest $\\gamma$-ray flux ever detected from this object. The associated spectral shape is soft ($\\Gamma_{0.1-300~{\\rm GeV}}=2.57\\pm0.17$) and this corresponds to an isotropic $\\gamma$-ray luminosity of (1.2 $\\pm$ 0.6) $\\times$ 10$^{48}$ erg s$^{-1}$. 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