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