Hemiacetal > Alcohol + Aldehyde

[#6:4]-[#8:1]-[#6:3](-[#6:5])-[#8:2]([H])>>[#6:4]-[#8:1].[#6:5]-[#6:3]=[O:2]

[#6:4]-[#8:1]-[#6:3](-[#6:5])-[#8:2]([H])

None

[#6:4]-[#8:1].[#6:5]-[#6:3]=[O:2]

None