You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[1-[N-ethyl-N'-[3-(3-oxo-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyridin-2-yl)propyl]carbamimidoyl]piperidin-4-yl]-N-methylacetamide into its molecular formula.
user
C20H35N7O2
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