preferred_name: (4S,5R)-4,5,6-trihydroxy-2-iminohexanoate => (2Z,4S,5R)-2-amino-4,5,6-trihydroxyhex-2-enoate
preferred_name_lc: (4s,5r)-4,5,6-trihydroxy-2-iminohexanoate => (2z,4s,5r)-2-amino-4,5,6-trihydroxyhex-2-enoate
label: (4S,5R)-4,5,6-trihydroxy-2-iminohexanoate => (2Z,4S,5R)-2-amino-4,5,6-trihydroxyhex-2-enoate
label_lc: (4s,5r)-4,5,6-trihydroxy-2-iminohexanoate => (2z,4s,5r)-2-amino-4,5,6-trihydroxyhex-2-enoate