You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 4-ethyl-13-heptyl-7-(4-methoxyphenyl)-8-oxa-3-thia-1,11,12-triazatricyclo[8.3.0.02,6]trideca-2(6),4,10,12-tetraene .
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C24H31N3O2S
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