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?? ???? >ethyl 2-[(2-methoxybenzoyl)amino]-5,5-dimethyl-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylate
ethyl 2-[(2-methoxybenzoyl)amino]-5,5-dimethyl-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylate
ethyl 2-[(2-methoxybenzoyl)amino]-5,5-dimethyl-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylate ??
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ethyl 2-[(2-methoxybenzoyl)amino]-5,5-dimethyl-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylate C??? ??, ??, ??
ethyl 2-[(2-methoxybenzoyl)amino]-5,5-dimethyl-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylate ?? ?? ? ???
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ethyl 2-[(2-methoxybenzoyl)amino]-5,5-dimethyl-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylate ?? ??
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