>4cy7_A: INSULIN A CHAIN GIVEQCCTSICSLYQLENYCN >4cy7_B: INSULIN B CHAIN FVNQHLCASHLVEALYLVCGERGFFYTPKT >4cy7_C: INSULIN A CHAIN GIVEQCCTSICSLYQLENYCN >4cy7_D: INSULIN B CHAIN FVNQHLCASHLVEALYLVCGERGFFYTPKT