label: 7-aminomethyl-7-carbaguanine + guanosine(34) in tRNA = 7-aminomethyl-7-carbaguanosine(34) in tRNA + guanine
label_lc: 7-aminomethyl-7-carbaguanine + guanosine(34) in trna = 7-aminomethyl-7-carbaguanosine(34) in trna + guanine