Task: Please answer the multiple choice question.
Question: Which molecule has the highest Caco-2 cell permeability?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
[a] C[C@H](NC(=O)[C@H](N)Cc1ccccc1)C(=O)N[C@H](CO)C(=O)O
[b] CC(=O)N[C@H](CC(C)C)C(=O)NCCc1ccccc1
[c] COc1ccc2c(c1)[C@@]13CCCC[C@@H]1[C@@H](C2)N(C)CC3
[d] COC(=O)c1ccc(O)cc1
Answer: d
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {permeability__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%permeability%}
Answer: {%multiple_choice_result}