Cepha block and beta block

Production
1

Cephalosporin and beta lactum product ,both have beta lactum ring.why cepha block and beta block is separated.

2

Screenshot_2018-10-16-23-17-59
Screenshot_2018-10-16-23-17-59720×1280 81.3 KB

Screenshot_2018-10-16-23-15-10
Screenshot_2018-10-16-23-15-10720×1280 70.5 KB

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