CH
3.
CH
3.
H
2
N
O
O
O
O
O
O
O
O
O
O
P
CH
3.
CH
3.
H
2
N
O
O
O
哦
哦
O
O
O
O
O
P
Ca
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
map