P
PA(S)
O
O1A
O
H
O2A
O
O5B
C5B
C4B(R)
O
O4B
C3B(S)
O
H
O3B
C2B(R)
O
H
O2B
C1B(R)
N
N9A
C8A
N
N7A
C5A
C6A
N
H
2
N6A
N
N1A
C2A
N
N3A
C4A
O
O3
P
PN
O
O1N
O
-
O2N
O
O5D
C5D
C4D(R)
O
O4D
C3D(S)
O
H
O3D
C2D(R)
O
H
O2D
C1D(R)
N
+
N1N
C2N
C3N
C7N
O
O7N
N
H
2
N7N
C4N
C5N
C6N