preferred_name: a long-chain fatty acid + ethanolamine => an N-(long-chain fatty acyl)ethanolamine + H2O
preferred_name_lc: a long-chain fatty acid + ethanolamine => an n-(long-chain fatty acyl)ethanolamine + h2o
label: a long-chain fatty acid + ethanolamine => an N-(long-chain fatty acyl)ethanolamine + H2O
label_lc: a long-chain fatty acid + ethanolamine => an n-(long-chain fatty acyl)ethanolamine + h2o