You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R)-2-amino-1-[7-[(2R)-2,3-diaminopropanoyl]-2,7-diazaspiro[3.5]nonan-2-yl]-3-phenylpropan-1-one .
user
C19H29N5O2
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