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 (6S)-9-fluoro-15-methyl-3,13-dioxa-2,11,16,20,21,24-hexazapentacyclo[16.5.2.02,6.07,12.021,25]pentacosa-1(24),7(12),8,10,18(25),19,22-heptaen-17-one is given. What is its corresponding molecular formula?
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C18H17FN6O3
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