You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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[2-[3-[8-amino-6-(trifluoromethyl)imidazo[1,2-a]pyrazin-3-yl]-4-methylphenyl]-1-fluoropropan-2-yl] 2,2,2-trifluoroacetate is the IUPAC name of a molecule. Please give its molecular formula.
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C19H15F7N4O2
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