You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 7-(8-amino-1-bromoimidazo[1,5-a]pyrazin-3-yl)-3-methyl-1,6,7,8-tetrahydropyrido[2,1-c][1,4]oxazin-4-one ?
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C15H16BrN5O2
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