You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[(Z)-[5-[[(Z)-2-amino-2-chloro-1-(2-iodo-2H-1,3-thiazol-3-yl)ethenyl]sulfonylamino]-2,3-dihydroinden-1-ylidene]amino]guanidine by IUPAC nomenclature, provide its molecular formula.
user
C15H17ClIN7O2S2
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