You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-(methylamino)-2-[[(3,3,9-trimethyl-11-oxo-1-aza-8-azoniatricyclo[6.3.1.04,12]dodeca-4(12),5,7-trien-10-yl)amino]methyl]butanal by IUPAC nomenclature, provide its molecular formula.
user
C19H29N4O2+
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