(E)
(E)
C19
C20
O
O20
C1
C2
C3(R)
C4(S)
C5(S)
C6(R)
C7
C8(R)
C9
C10
C11
C12
C13
C14(R)
C15(R)
C16
C17
C18
C21
C22
C23
O
O1
O
H
O3
O
O9
O
O15
C1A(R)
C2A(R)
C3A(R)
C4A(S)
C5A(R)
C6A
C7A
C8A
O
O1A
O
H
O2A
N
N3A
O
O4A
O
O5A
C1B(S)
C2B
C3B(R)
C4B(S)
C5B(S)
C6B
C7B
O
H
O3B
O
H
O4B
O
O5B
C1C(R)
C2C(R)
C3C(R)
C4C(R)
C5C(R)
C6C
C7C
C8C
O
O1C
O
O2C
O
O3C
O
H
O4C
O
O5C