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 6,8-dichloro-3-[(2S)-3-[(2-fluorophenyl)methoxy]-2-hydroxypropyl]quinazolin-4-one is given. What is its corresponding molecular formula?
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C18H15Cl2FN2O3
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