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Methyl 4-[8-(5-bromo-2,4-dichlorobenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoate

4-[8-(3-Chloro-5-cyclopropylbenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoic acid

Methyl 4-[8-(3,5-dibromo-4-chlorobenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoate

Methyl 4-[8-(3-bromo-4,5-dichlorobenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoate

4-[8-(4-Chloro-3-ethylbenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoic acid

4-[8-(4-Chloro-3-ethoxybenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoic acid

Methyl 4-[8-(5-bromo-3-chlorobenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoate

4-[8-(3-Bromo-4-chlorobenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoic acid

Methyl 4-[8-(3-bromo-4-chlorobenzyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-3-yl]benzoate

Tert-butyl 3-[4-(methoxycarbonyl)phenyl]-1-oxa-2,8-diazaspiro[4,5]dec-2-ene-8-carboxylate

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