preferred_name: butanal + hydrogen cyanide <=> (2S)-2-hydroxypentanenitrile
preferred_name_lc: butanal + hydrogen cyanide <=> (2s)-2-hydroxypentanenitrile
label: butanal + hydrogen cyanide <=> (2S)-2-hydroxypentanenitrile
label_lc: butanal + hydrogen cyanide <=> (2s)-2-hydroxypentanenitrile