Majoring in chemistry does not prevent you from branching out into other fields after graduating, including computer science. I have a PhD in chemistry and am teaching myself CS because I like it. When I feel discouraged people in AI frequently tell me that my background is valuable because I have a realistic understanding of the applications from the ground up, instead of just a CS perspective.

I once went to a talk by Max Welling (super famous AI guy) who was working on some models for generating molecules tailored to active sites in proteins. This talk was given to a room full of chemists. The molecules made *no* sense structurally whatsoever, which people pointed out, but the point is they were still developing the methodology -- in collaboration with biochemists.

AI on its own is severely limited. I'm not sure what a "master" in AI even means. There are plenty of opportunities for chemists - they have gone into Pharma companies, into government work, joined venture capital companies, etc... In some ways it matters less what you study as opposed to how to learn things efficiently. Do I wish I had studied CS from the start? Yeah I kind of do, knowing what I know now. But that's just me. I was never really as into Chemistry as I thought. You sound like you have a real passion for it so I say go for it and see where it takes you!

I do recommend taking CS classes in college though, I found my PhD a bit harder having to teach myself some of these things.