You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (3S,7R,11E)-11-[(2-fluorophenyl)methylidene]-4,6-dimethyl-3,7-diphenyl-10-thia-1,2,4,6,8-pentazatricyclo[7.3.0.03,7]dodec-8-ene-5,12-dione by IUPAC nomenclature, provide its molecular formula.
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C27H22FN5O2S
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