You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-[[2-(2,4-dioxo-1H-quinazolin-3-yl)-3-phenylpropanoyl]amino]-4-methylpentanoyl]amino]-4-methylpentanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H36N4O6
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