C21
O
O22
O
O23
C42
C46
C45
C44
C43
C17
C18(S)
O
O19
N
H
N20
C24
C25
C26
C27
C28
C1
C2(R)
C3(R)
N
H
N4
O
O5
C6
C8
C29
N
H
N7
S
S47
O
O49
O
O50
C48
C52
C51
N
N10
C11(S)
C14
O
O15
C12
C13(R)
C9
O
O16
C30
N
N31
O
O32
C33
C34
C35
C36
C37
C38
C39
C40
C41
H
H3
H
H10