Reaction SMILES: [NH2:1][CH2:2][C:3]([NH:5][C@H:6]([C:14]([NH:16][C@H:17]([C:22]([NH:24][C@H:25]([C:29]([NH:31][C@H:32]([C:35]([NH:37][C@H:38]([C:44]([NH:46][C@H:47]([C:53]([NH:55][C@H:56]([C:59]([NH:61][C@H:62]([C:68]([NH:70][C@H:71]([C:75]([N:77]1[CH2:114][CH2:113][CH2:112][C@H:78]1[C:79]([NH:81][C@H:82]([C:87]([NH:89][C@H:90]([C:94]([NH:96][C@H:97]([C:101]([NH:103][C@H:104]([C:109]([OH:111])=[O:110])[CH2:105][CH:106]([CH3:108])[CH3:107])=[O:102])[C@@H:98]([CH3:100])[OH:99])=[O:95])[CH:91]([CH3:93])[CH3:92])=[O:88])[CH2:83][CH:84]([CH3:86])[CH3:85])=[O:80])=[O:76])[C@@H:72]([CH3:74])[OH:73])=[O:69])[CH2:63][CH2:64][C:65](=[O:67])[NH2:66])=[O:60])[CH2:57][OH:58])=[O:54])[CH2:48][CH2:49][CH2:50][CH2:51][NH2:52])=[O:45])[CH2:39][CH2:40][C:41](=[O:43])[OH:42])=[O:36])[CH2:33][OH:34])=[O:30])[C@@H:26]([CH3:28])[OH:27])=[O:23])[CH2:18][CH2:19][S:20][CH3:21])=[O:15])[CH2:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)=[O:4].[OH2:115].[OH:116]O.C(O)(C)(C)C.O>C([O-])(=O)C.[NH4+].[NH4+].[O-][Mo]([O-])(=O)=O>[NH2:1][CH2:2][C:3]([NH:5][C@H:6]([C:14]([NH:16][C@H:17]([C:22]([NH:24][C@H:25]([C:29]([NH:31][C@H:32]([C:35]([NH:37][C@H:38]([C:44]([NH:46][C@H:47]([C:53]([NH:55][C@H:56]([C:59]([NH:61][C@H:62]([C:68]([NH:70][C@H:71]([C:75]([N:77]1[CH2:114][CH2:113][CH2:112][C@H:78]1[C:79]([NH:81][C@H:82]([C:87]([NH:89][C@H:90]([C:94]([NH:96][C@H:97]([C:101]([NH:103][C@H:104]([C:109]([OH:111])=[O:110])[CH2:105][CH:106]([CH3:108])[CH3:107])=[O:102])[C@@H:98]([CH3:100])[OH:99])=[O:95])[CH:91]([CH3:93])[CH3:92])=[O:88])[CH2:83][CH:84]([CH3:86])[CH3:85])=[O:80])=[O:76])[C@@H:72]([CH3:74])[OH:73])=[O:69])[CH2:63][CH2:64][C:65](=[O:67])[NH2:66])=[O:60])[CH2:57][OH:58])=[O:54])[CH2:48][CH2:49][CH2:50][CH2:51][NH2:52])=[O:45])[CH2:39][CH2:40][C:41](=[O:42])[OH:43])=[O:36])[CH2:33][OH:34])=[O:30])[C@@H:26]([CH3:28])[OH:27])=[O:23])[CH2:18][CH2:19][S:20]([CH3:21])(=[O:116])=[O:115])=[O:15])[CH2:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)=[O:4]
Reactant: OO
Reactant: O
Reactant: CSCC[C@H](NC(=O)[C@H](Cc1ccccc1)NC(=O)CN)C(=O)N[C@H](C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(C)C)C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@@H](CC(C)C)C(=O)O)[C@@H](C)O)C(C)C)[C@@H](C)O)[C@@H](C)O
Agent: O=[Mo](=O)([O-])[O-]
Agent: CC(=O)[O-]
Agent: [NH4+]
Solvent: CC(C)(C)O
Product: CC(C)C[C@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@@H]1CCCN1C(=O)[C@@H](NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CO)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CO)NC(=O)[C@@H](NC(=O)[C@H](CCS(C)(=O)=O)NC(=O)[C@H](Cc1ccccc1)NC(=O)CN)[C@@H](C)O)[C@@H](C)O)C(C)C)[C@@H](C)O)C(=O)O
Temperature: 25 °C
Reaction time: 4 h

Procedure:
200 mg Of the peptide obtained in Example I are introduced into 5 ml of water to which are added in order of succession 0.025 ml of 0.5 M ammonium molybdate, 0.125 ml HClO4, and 0.075 ml of 30% hydrogen peroxide. The mixture is stirred at room temperature for 4 hours, after which 5 ml of tertiary butanol/water (1:1) and ion exchanger in acetate form are added. After stirring for half an hour the ion exchanger is filtered out and the filtrate is evaporated to dryness. Yield 175 mg of peptide (in the form of an acetate).