[CH2:1]([O:3][C:4](=[O:8])[CH2:5][O:6][NH2:7])[CH3:2].[C:9](O)(=[O:14])[CH2:10][CH2:11][C:12]#[CH:13].C1(N=C=NC2CCCCC2)CCCCC1>CCOC(C)=O>[CH2:1]([O:3][C:4](=[O:8])[CH2:5][O:6][NH:7][C:9](=[O:14])[CH2:10][CH2:11][C:12]#[CH:13])[CH3:2]To a solution of 2-Aminoxy-acetic acid ethyl ester (573 mg, 4.8 mmol) and 4-Pentynoic acid (441 mg, 4.5 mmol) in 15 mL EtOAc were added dicyclohexylcarbodiimide (928 mg, 4.5 mmol) and the resulting mixture was stirred at room temperature for 16 h.
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