O
O2C
CCC
O
H
O1C
CBC
CAC
C3C
C4C
CHD
C2C
CDC
C1C
N
NC
Fe
FE
N
+
ND
C1D
C2D
CAD
CBD
CCD
O
H
O1D
O
O2D
C4D
C3D
CDD
CHC
C4B
C3B(R)
CAB
CBB
CCB
O
H
O1B
O
O2B
C2B(S)
CMB
CDB
CEB
O
O3B
O
H
O4B
C1B
N
+
NB
CHB
C4A
N
NA
C1A
CHA
C2A(S)
CMA
CDA
CEA
O
H
O3A
O
O4A
C3A(R)
CAA
CBA
CCA
O
O2A
O
H
O1A