preferred_name: preaustinoid A + A + H2O => protoaustinoid B + AH2 + O2
preferred_name_lc: preaustinoid a + a + h2o => protoaustinoid b + ah2 + o2
label: preaustinoid A + A + H2O => protoaustinoid B + AH2 + O2
label_lc: preaustinoid a + a + h2o => protoaustinoid b + ah2 + o2