(E)-but-1-en-1-SO-peroxol => (Z)-butanethial oxide
(e)-but-1-en-1-so-peroxol => (z)-butanethial oxide
(E)-but-1-en-1-SO-peroxol => (Z)-butanethial oxide
(e)-but-1-en-1-so-peroxol => (z)-butanethial oxide