You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(7-chloro-2-methoxybenzo[b][1,5]naphthyridin-10-yl)-N',N'-diethylpentane-1,5-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H29ClN4O
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