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 or b without using any other words.
Options:
a) Cc1ccnc2nc(Cc3nc4cc(C(=N)N)ccc4[nH]3)[nH]c12
b) COC(=O)C1=CO[C@@H](C)[C@H]2CN3CCc4c([nH]c5ccccc45)[C@@H]3C[C@@H]12
Answer: b
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}
methyl(1S,15R,16S,20R)-16-methyl-17-oxa-3,13-diazapentacyclo[11.8.0.02,10.04,9.015,20]henicosa-2(10),4,6,8,18-pentaene-19-carboxylate