You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 9-chloro-N,N-dimethyl-13-oxa-2-azatetracyclo[12.4.0.02,6.07,12]octadeca-1(18),7(12),8,10,14,16-hexaen-4-amine .
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C18H19ClN2O
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