4
ANDROSTENEDIONE
HO
B
C
18
12
11
19
2
7
8
5
9
10
14
15
1
13
O
B
C
18
12
11
19
2
4
7
8
5
9
10
14
15
1
13
ESTRONE
OH
O
6
6
O
B
C
18
12
11
19
2
7
8
5
9
10
14
15
1
13
OH
B
C
18
12
11
19
2
4
7
8
5
9
10
14
15
1
13
TESTOSTERONE
HO
OH
6
6
ESTRADIOL
Aromatase
Aromatase
17
17
DIHYDROTESTOSTERONE
17
16
17