You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 2-[(3-cyano-4-thiophen-2-yl-5,6-dihydrobenzo[h]quinolin-2-yl)sulfanyl]acetamide is given. What is its corresponding molecular formula?
user
C20H15N3OS2
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