H - Asp - Ala - Glu - Phe - Arg* - His - Asp - Ser - Gly - Tyr - Glu - Val - His - His - Gln - Lys* - Leu - Val - Phe - Phe - Ala - Glu - Asp - Val - Gly - Ser - Asn - Lys* - Gly - Ala - Ile - Ile - Gly - Leu - Met - Val - Gly - Gly - Val - Val - Ile - Ala - OH [Arg*=Arg(U - 13C6, U - 15N4) and Lys*=Lys(U - 13C6, U - 15N2)]