You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-(2,6-dichlorophenyl)-12-methylsulfanyl-2,5,11,13-tetrazatricyclo[7.4.0.02,6]trideca-1(13),5,7,9,11-pentaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H12Cl2N4S
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