You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by (6S)-9-acetyl-6-tert-butyl-2-chloro-3-(3-methoxypropoxy)-5,6-dihydropyrido[1,2-h][1,7]naphthyridin-10-one ?
user
C22H27ClN2O4
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