You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N,N-diethyl-2-(6-methoxy-10-nitro-8,14,15-triazatetracyclo[7.6.1.02,7.013,16]hexadeca-1(15),2(7),3,5,9,11,13(16)-heptaen-14-yl)ethanamine;methanesulfonic acid into its molecular formula.
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C21H27N5O6S
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