You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-methyl-6-(9-methylnaphtho[2,1-b][1]benzofuran-8-yl)-3-(trideuteriomethyl)pyridazin-1-ium into molecular formula.
user
C23H19N2O+
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