CH3 CH O OH CH CH O CH CH O CH CH O CH CH OO CH CH O

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H3C
H3C
H3C
OH
O
O
H3C
H3C
H3C
O
H3C
O
+ H3C
H3C
H3C
O
O
CH3
H3C
H3C
O
H3C
O
H3C
H3C
O
CH3
CH3
+
O
O
H3C
O
CH3
H2C
CH3
O
CH3
H3C
O
H3C
CH3
O
H3C
O
H3C
Et 2NH - HCHO
+
CH2
O
H3C
O
H2C
CH3
H3C
CH3
O
+
Et 2NH - HCHO
O
CH3
H3C
+
+ Et2NH
CH3
O
CH3
- HCHO
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