I need to create a formula that says IF LEFT(A1,1)="7" AND LEFT(C1,1)="A" OR
LEFT(C1,1)="T" OR LEFT(C1,1)="G", THEN CONCATENATE(A1,B1,C1)

I don't know if I can use AND and OR in the same formula, or how to string
it all together. Help, please. Thank you.