You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[4-chloro-2-[4-(1,3-thiazol-2-yl)piperazin-1-yl]phenyl]-N-methylmethanamine by IUPAC nomenclature, provide its molecular formula.
user
C15H19ClN4S
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