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What is the molecular formula of the compound with this IUPAC name [5-chloro-14-[2-(diethylamino)ethyl]-14-oxido-8-thia-15-aza-14-azoniatetracyclo[7.6.1.02,7.013,16]hexadeca-1(15),2(7),3,5,9,11,13(16)-heptaen-10-yl]methanol ?
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C20H22ClN3O2S
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