preferred_name: fumarate + L-arginine => 2-(N(omega)-L-arginino)succinate
preferred_name_lc: fumarate + l-arginine => 2-(n(omega)-l-arginino)succinate
label: fumarate + L-arginine => 2-(N(omega)-L-arginino)succinate
label_lc: fumarate + l-arginine => 2-(n(omega)-l-arginino)succinate