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Under IUPAC nomenclature, a molecule named (1S,9S)-7-butyl-12-[(E)-3-phenylprop-2-enyl]sulfanyl-10-thia-8,13,15-triazatetracyclo[7.7.0.02,6.011,16]hexadeca-2(6),7,11(16),12,14-pentaene is given. What is its corresponding molecular formula?
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C25H27N3S2
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