百科词条脱氢丙氨酸dehydroalanine - tikz \usepackage chemfig \begin document \chemfig - 0.7,1 COOH < 6,0.8 NH 2 = 3.3,1 \end document smiles C=C C =O O N作者:admin2026-08-16称谓dehydroalanine-\usepackage{chemfig} \begin{document} \chemfig{ (-[0.7,1]COOH) (<[6,0.8]NH_2) (=[3.3,1]) } \end{document}3D结构C=C(C(=O)O)N