You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[(2R)-2-[(5,7-dimethylimidazo[1,2-a]pyrimidin-2-yl)methyl-methylamino]propyl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
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C18H29N5O2
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