2 ? ? 
  o3  ?23   3???o1/33   6?????/3   ?1216?
?????3?????
1?'? C2H4O2?a?D?o?3??o?3??????????????????DD???
1??y??'? CH3CH2CH2CH2OH?a??????t?????????t?a??????y?????????????1?o??????o?e?o????D??2?D?o?3?D??????????????o?????????-????1???????????1???????o??????o?????Y????'????????????????D???o????????????????
1???'? CH3OH?a????1?????1??????DD???2??a??1?
1???'? C4H10O?a??????????1?????????????????
1?'??? Na2CO3?a?2?????1???e???????????o?3?'???????1?1???
3?'??? Na2CO3?a?3?DD???
??? ??? ??? ??? ??? ??? ??? ??? ??? ???