2. Treatment of a polypeptide by dithiothreitol yields two polypeptides that have the following amino acid sequences: 2. VCWVIFGCK Chymotrypsin-catalyzed hydrolysis of the intact polypeptide yields polypeptide fragment with the following amino acid compositions: 1. (A,F) 2. (N, C, M, Y) 3. (C, G, K) 4. (C2, L, W2, V) 5. (I, F, V) Indicate the position of the disulfide bonds in the original polypeptide. 1. AFCMYCLWCN