preferred_name: 1-methylnicotinamide(out) = 1-methylnicotinamide(in)
preferred_name_lc: 1-methylnicotinamide(out) = 1-methylnicotinamide(in)
label: 1-methylnicotinamide(out) = 1-methylnicotinamide(in)
label_lc: 1-methylnicotinamide(out) = 1-methylnicotinamide(in)