(X)
(X)
(X)
(X)
N
H
2
N1
C1(S)
C2
C3(R)
O
H
O1
C4
N
N2
C5
C6
O
O2
C7
S
S1
N
H
N3
C8(S)
C9
O
O3
C10
N
H
N4
C11(S)
C12
C13
C14
C15
N
H
N5
C16
N
H
2
N6
N
H
2
+
N7
N
N8
C17
C18
O
O4
C19
S
S2
N
H
N9
C20(S)
C21
O
O5
C22
C23
O
O6
O
H
O7
N
H
N10
C24(S)
C25
C26
O
H
O8
C27
O
O9
C28
N
N11
C29
O
O10
N
H
N12
C30(S)
C31
O
O11
C32
O
H
O12
N
H
N13
C33(S)
C34
C35
C36
C37
N
H
N14
C38
N
H
2
N15
N
H
2
+
N16
N
N17
C39
C40
O
O13
C41
S
S3
N
H
N18
C42
C43
O
O14
N
H
N19
C44(S)
C45
C46
C47
O
O15
C48
N
N20
C49
O
O16
N
H
N21
C50
C51
O
O17
N
H
N22
C52(S)
C53
C54
C55
C56
C57
N
H
3
+
N23
C58
O
O18
C59
N
N24
C60
O
O19
N
H
N25
C61(S)
C62
O
O20
C63
O
H
O21
N
H
N26
C64
C65
C66
O
O22
C67
N
N27
C68
O
O23
N
H
N28
C69(S)
C70
O
O24
C71
N
H
N29
C72(S)
C73
O
O25
C74
O
H
O26
O
H
O27