You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 14-[(3-iodo-4-methoxyphenyl)methylidene]-11-thiophen-2-yl-15-thia-12,17-diazatetracyclo[8.7.0.02,7.012,16]heptadeca-1(10),2,4,6,16-pentaen-13-one by IUPAC nomenclature, provide its molecular formula.
user
C26H19IN2O2S2
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