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-ethyl-3-(2-methyl-2-phenylpropyl)-2-(5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl)guanidine into molecular formula.
user
C20H30N6
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