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What is the molecular formula of the molecule N-[(9S)-19-methoxy-5-methylsulfanyl-6-oxo-15,17-dioxatetracyclo[10.7.0.02,8.014,18]nonadeca-1(19),2,4,7,12,14(18)-hexaen-9-yl]acetamide ?
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C21H21NO5S
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