label: cytidine(32) in tRNA(Thr) + S-adenosyl-L-methionine => N(3)-methylcytidine(32) in tRNA(Thr) + S-adenosyl-L-homocysteine + H(+)
label_lc: cytidine(32) in trna(thr) + s-adenosyl-l-methionine => n(3)-methylcytidine(32) in trna(thr) + s-adenosyl-l-homocysteine + h(+)