You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule tert-butyl 4-[4-[2-amino-3,5-dicyano-6-[[2-(methylcarbamoyl)pyridin-4-yl]methylsulfanyl]pyridin-4-yl]phenoxy]butanoate into molecular formula.
user
C29H30N6O4S
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