preferred_name: chrysophanol-9-anthrone + O2 <=> chrysophanol + H2O
preferred_name_lc: chrysophanol-9-anthrone + o2 <=> chrysophanol + h2o
label: chrysophanol-9-anthrone + O2 <=> chrysophanol + H2O
label_lc: chrysophanol-9-anthrone + o2 <=> chrysophanol + h2o