Отметь формулу фенилаланина.

• (\begin{equation*}
  \begin{array}{l}
  H_2N-\underset{|}{\text{C}}H-COOH \
  \quad CH_2-SH
  \end{array}
  \end{equation*})
• (\begin{equation*}
  \begin{array}{l}
  \underset{|}{\mathrm{C}}H_{2}-CH_{2}-CH_{2}-COOH \
  NH_{2}
  \end{array}
  \end{equation*})
• (\begin{equation*}
  \begin{array}{l}
  H_2N-\underset{|}{\underset{}{C}}H-COOH \
  \qquad CH_2-C_6H_5
  \end{array}
  \end{equation*})
• (\begin{aligned}
  \underline{C}|H-COONH_4 \
  NH_2
  \end{aligned})