You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-ethyl-1-methyl-2-[(1-methyl-3,4-dihydro-2H-quinolin-6-yl)methyl]-1-[(2-methyl-1,3-thiazol-4-yl)methyl]guanidine by IUPAC nomenclature, provide its molecular formula.
user
C20H29N5S
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