You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methoxy-5-[3-(7-methoxy-1,3-benzodioxol-5-yl)-1,2-oxazol-2-ium-4-yl]aniline is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H17N2O5+
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