Jey-Jey

Hello, I would really appreciate your help with following questing. In a test in organic chemistry I was asked to classify these organic compounds in order of increasing basicity in aqueous solution: 1. 4-trifluormethylaniline 2. Tributylamine 3. Methylamine 4. Di(dodec-1-yl)amine I think that the order of 1-3 is correct (3 – most alkaline), but I’m really not sure with 4. This compound should be lipophilic (surfactant maybe?) and I don’t know how it will react in the aqueous solution. I already asked my friends, but we are all just biology students and thus we have a little problem with that. Thanks for help and sorry for mistakes, I’m not native speaker.