You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-(2-isoquinolin-1-ylcarbazol-9-yl)-9-phenylpyrido[2,3-b]indole;platinum(2+) by IUPAC nomenclature, provide its molecular formula.
user
C38H24N4Pt+2
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