You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 5-(7-acetyl-3-phenylpyrido[2,3-b]pyrazin-2-yl)pentanoic acid;7-bromo-2-chloro-3-phenylpyrido[2,3-b]pyrazine;6-bromo-2-phenyl-4H-1,8-naphthyridin-3-one;5-bromopyridine-2,3-diamine;tert-butyl 5-(7-acetyl-3-phenylpyrido[2,3-b]pyrazin-2-yl)pentanoate;1-(2-chloro-3-phenylpyrido[2,3-b]pyrazin-7-yl)ethanone .
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C91H78Br3Cl2N17O8
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