You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[[2-ethyl-6-(2-methylsulfonyl-2,7-diazaspiro[3.5]nonan-7-yl)imidazo[1,2-a]pyrazin-3-yl]-methylamino]-4-(4-fluorophenyl)-1,3-thiazole-5-carbonitrile by IUPAC nomenclature, provide its molecular formula.
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C27H29FN8O2S2
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