UM(B33)*LOOKUP(MIN(B33),$A$1:$A$10,$C$1:C10),$A$1:$A$10, $D
I'm not sure what you're trying to do here. If I understand correctly, you want to find the value in column D that corresponds to the sum of B33 multiplied by the minimum of B33.
If this is correct, you can use a combination of INDEX and ...