You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl N-[2-(4-amino-3-bromo-5-chlorophenyl)-3,5-dioxo-1,2,4-triazine-6-carbonyl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H11BrClN5O5
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