This molecule does not have a ring. Begin with a straight-chain five-carbon ketone: carbon-1 is a terminal methyl (-CH3), carbon-3 is the carbonyl carbon (C=O), and carbons-4 and -5 form the ethyl tail (-CH2-CH3) attached to the carbonyl carbon.

At carbon-2, one of the original hydrogen is replaced by a linear chain: from C-2 a methylene, then an ether oxygen, then ethylene linker (-CH2-CH2-), terminating in a primary amine.

No stereochemistry is specified, and no other functional groups are present.