What is the IUPAC name for the following molecules: 1. CH3CH2N(CH2CH2CH3)CH2CH3 2. CH3CH2N(CH3)CH2CH3?

I tried N,N-diethylpropanamine for the first one and N-methyl-3,4-ethanamine for the second one, but my instructor said they were wrong.If anyone could help me, that would be great! Thanks