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Under IUPAC nomenclature, a molecule named 7-[(3S,5R)-3,5-dimethylpiperazin-1-yl]-2-(6-methylpyrazolo[1,5-a]pyrazin-2-yl)pyrido[1,2-a]pyrimidin-4-one;2-(2-methyl-1,3-benzothiazol-6-yl)-7-(1-methylpiperidin-4-yl)pyrido[1,2-a]pyrimidin-4-one;2-(2-methylimidazo[1,2-a]pyridin-6-yl)-7-piperazin-1-ylpyrido[1,2-a]pyrimidin-4-one;7-[(3S)-3-methylpiperazin-1-yl]-2-(6-methylpyrazolo[1,5-a]pyrazin-2-yl)pyrido[1,2-a]pyrimidin-4-one;7-(4-methylpiperazin-1-yl)-2-(6-methylpyrazolo[1,5-a]pyrazin-2-yl)pyrido[1,2-a]pyrimidin-4-one is given. What is its corresponding molecular formula?
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C103H107N31O5S
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