Task: Translation
Input (English): Semisynthetic cephalosporins are obtained from 7-aminocephalosporanic acid (7ACA), which is obtained in turn from natural cephalosporin C by
Output (Spanish): Las cefalosporinas semisintéticas se obtienen a partir del ácido 7-aminocefalosporánico (7ACA), que se obtiene a su vez de la cefalosporina C natural mediante