You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2,4-difluoro-N-[2-methoxy-5-(4-oxopyrido[1,2-a]pyrimidin-7-yl)pyridin-3-yl]benzenesulfonamide;2,5-difluoro-N-[2-methoxy-5-(4-oxopyrido[1,2-a]pyrimidin-7-yl)pyridin-3-yl]benzenesulfonamide;2,4-difluoro-N-[2-methyl-5-(4-oxopyrido[1,2-a]pyrimidin-7-yl)pyridin-3-yl]benzenesulfonamide;2-fluoro-N-[2-methoxy-5-(4-oxopyrido[1,2-a]pyrimidin-7-yl)pyridin-3-yl]benzenesulfonamide;3-fluoro-N-[2-methoxy-5-(4-oxopyrido[1,2-a]pyrimidin-7-yl)pyridin-3-yl]benzenesulfonamide;N-[2-methoxy-5-(4-oxopyrido[1,2-a]pyrimidin-7-yl)pyridin-3-yl]ethanesulfonamide by IUPAC nomenclature, provide its molecular formula.
user
C116H88F8N24O23S6
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