You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 5-(2-fluorophenyl)-3-(thiophen-2-ylmethyl)-2,3-dihydro-1H-1,4-benzodiazepine is given. What is its corresponding molecular formula?
user
C20H17FN2S
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