preferred_name: angiotensin I + H2O => angiotensin-(1-9) + L-leucine
preferred_name_lc: angiotensin i + h2o => angiotensin-(1-9) + l-leucine
label: angiotensin I + H2O => angiotensin-(1-9) + L-leucine
label_lc: angiotensin i + h2o => angiotensin-(1-9) + l-leucine