H
3.
C
O
NH
2
NH
O
N
O
NH
H
3.
C
H
3.
C
N
H
O
CH
3.
H
3.
C
H
N
O
H
N
O
H
3.
C
N
H
O
N
H
O
H
3.
C
H
N
O
何
N
H
O
N
H
N
O
Cl
N
H
O
NH
O
CH
3.