It looks like you have two molecules there. CH3CHO is acetaldehyde (ethanal) HN(CH3)CH3 is dimethylamine (N-methylmethamine) IUPAC names are in parenthesis, the common names are more often used. Solution It looks like you have two molecules there. CH3CHO is acetaldehyde (ethanal) HN(CH3)CH3 is dimethylamine (N-methylmethamine) IUPAC names are in parenthesis, the common names are more often used..