You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name tert-butyl 4-[10-(2-methylphenyl)-2-oxo-1H-pyrimido[1,2-b]indazol-4-yl]piperidine-1-carboxylate into its molecular formula.
user
C27H30N4O3
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