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system
Provide the molecular formula for the IUPAC named substance 1-ethyl-2-[(3-methylphenyl)methyl]-3-[2-(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-yl)ethyl]guanidine .
user
C20H30N6
assistant