A. CH22=CH–COO-CH=CH–COO-CH33 B. CH B. CH22 =CH–COOH =CH–COOH C....

Câu 23A. CH

2

2

=CH–COO-CH=CH–COO-CH

3

3

B. CH B. CH

2

2

=CH–COOH =CH–COOH C. CHC. CH

3

3

–COO-CH=CH–COO-CH=CH

2

2

C. CHC. CH

2

2

=CH–COO-C=CH–COO-C

2

2

HH

5

5

A. CH