Ammonium → Methyl 4-hydroxy-4-(2,3,4-trimethoxyphenyl)-2-butynoate

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[C:1]([C:2]#[CH:3])(=[O:4])[O:5][CH3:6].[CH2:7]([Li:8])[CH2:9][CH2:10][CH3:11].[CH3:12][O:13][c:14]1[c:15]([CH:16]=[O:17])[cH:18][cH:19][c:20]([O:24][CH3:25])[c:21]1[O:22][CH3:23].[Cl-:26].[NH4+:27].[O:28]1[CH2:29][CH2:30][CH2:31][CH2:32]1>>[C:1]([C:2]#[C:3][CH:16]([c:15]1[c:14]([O:13][CH3:12])[c:21]([O:22][CH3:23])[c:20]([O:24][CH3:25])[cH:19][cH:18]1)[OH:17])(=[O:4])[O:5][CH3:6]