label: 4-(gamma-L-glutamylamino)-(2S)-2-hydroxybutanoyl-[BtrI ACP] + ribostamycin = gamma-L-glutamyl-butirosin B + holo-[BtrI ACP] + H(+)
label_lc: 4-(gamma-l-glutamylamino)-(2s)-2-hydroxybutanoyl-[btri acp] + ribostamycin = gamma-l-glutamyl-butirosin b + holo-[btri acp] + h(+)