preferred_name: (Z)-2-methylpropanal oxime => (E)-2-methylpropanal oxime
preferred_name_lc: (z)-2-methylpropanal oxime => (e)-2-methylpropanal oxime
label: (Z)-2-methylpropanal oxime => (E)-2-methylpropanal oxime
label_lc: (z)-2-methylpropanal oxime => (e)-2-methylpropanal oxime