20O21CH3222O3HN12324S255O6HN426727282930OH31323334O12HN11133536CH337CH33839O40NH1441424344O45NH24647O16NH15484950O51H2N529O10HN85354S5517O18N565719585960O61NH62636465H3C66H3C6768O69NH7071H2N72Ac1NH223CysTyr4Ile5Gln6Asn78CysPro9Leu1011Gly