You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-(4-prop-1-en-2-yl-6,7-dihydro-5H-cyclopenta[b]pyridin-3-yl)-1,3-thiazole by IUPAC nomenclature, provide its molecular formula.
user
C14H14N2S
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