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What is the molecular formula of the molecule identified by N-[(7S,8aS)-2-(5-chloro-2-methoxyphenyl)-1,3-dioxo-6,7,8,8a-tetrahydro-5H-imidazo[1,5-a]pyridin-7-yl]-2-thiophen-2-ylacetamide ?
user
C20H20ClN3O4S
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