Name The Aldehyde Displayed Below

Name the aldehydes shown below.

/ \ / \ /

I

Friend

Name the aldehydes shown below.

I can't contact the PTO, but that's the way it is.

update

Double slashes with O are fine ... I don't know why it doesn't come out that way.

The YES script ignores this, so for example you can use s (...) to separate things.

CH3CH2CH

................. ||

................... or

FWIW it is better to drag it as text:

CH3CH2CHBrCH2CH2CH2C

Verify that this is the original structure.

5 Bromo Hept

Name The Aldehyde Displayed Below