以下文字与答案无关
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HOOCCH2COOH
B:HOOCCH2COOH + CH3OH + CH3CH2OH
C:CH3OOCCH2COOH + CH3CH2OH
D:HOOCCH2COOCH2CH3 + CH3CH2OH
E:CH3CH2CH2CH2COOH
HOOCCH2COOH
B、HOOCCH2COOCH2CH3+ CH3OH
C、CH3OOCCH2COOH + CH3CH2OH
D、H0OCCH2COOH + CH3OH + CH3CH2OH
CH3COOCH2CH2CH3
B:CH3CH2CH2COOCH2CH3
C:CH3COOCH(CH3)2
D:HCOOCH(CH3)2
H2CO3
B:CH3COOH
C:HCOOH
D:HOOC-CH2-CH₂-COOH