You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 8-methoxy-2-(2-methoxyethylsulfanyl)-3-prop-2-enylspiro[6H-benzo[h]quinazoline-5,3'-pyrrolidine]-4-one is given. What is its corresponding molecular formula?
user
C22H27N3O3S
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