You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name carbamimidoyl-[4-(7,8-dimethoxy-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl)butyl]azanium into its molecular formula.
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C22H28N5O3+
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