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 (10R,15S)-7-(2,5-dichlorophenyl)-4-oxa-1,12-diazatetracyclo[7.6.1.05,16.010,15]hexadeca-5,7,9(16)-triene is given. What is its corresponding molecular formula?
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C19H18Cl2N2O
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