>3p2x_A: Insulin GIVEQCCTSICSLYQLENYCN >3p2x_B: Insulin FVNQHLCASHLVEALYLVCGERGFFYTPKT >3p2x_C: Insulin GIVEQCCTSICSLYQLENYCN >3p2x_D: Insulin FVNQHLCASHLVEALYLVCGERGFFYTPKT