C
O
O
CA
CB1
C1A
C2A
C3A
C4A
C11
C5A
C6A
C7A
C8A
C12
CB2
C1B
C2B
C3B
C4B
C13
C5B
C6B
C7B
C8B
C14
N
H
N
CA1(S)
C1
O
O1
CB
CG
CD
O
OE1
N
H
N1
CA2(S)
CB3
CG1
CD1
CD2
CH(S)
O
H
OH
CM
C2
O
O2
N
H
N2
CA3(S)
C3
O
O3
CB4
CG2
CD3
CD4
N
H
N3
CA4
CG3
CD5
CD6
CE1
CE2
CZ
CB5
N
H
N4