You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-(4-methoxy-2,3-dihydro-1H-inden-1-yl)-3-([1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl)urea .
user
C18H19N5O2
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