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What is the molecular formula of the molecule identified by (2S,8'R)-7-chloro-4,6-dimethoxy-1',8'-dimethyl-5'-quinolin-6-ylspiro[1-benzofuran-2,7'-5,8,9,10-tetrahydropyrimido[4,5-b]quinoline]-2',3,4',6'-tetrone ?
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C31H25ClN4O7
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