You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[2-butyl-4-oxo-3-[[4-[2-(1-trityltetrazol-5-yl)phenyl]phenyl]methyl]quinazolin-6-yl]-2,3,3a,4,5,6-hexahydropyrrolo[1,2-b][1,2]oxazole-3-carboxylic acid into its molecular formula.
user
C52H47N7O4
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