Task: Answer the multiple-choice question.
Query: Which drug exhibits a 19.091\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a) CC1(C)CC(NCc2ccncc2)CC(C)(C)N1
b) O=C1CC(=O)Nc2cc(S(=O)(=O)N3CCN(c4cccc(C(F)(F)F)c4)CC3)ccc2N1
Answer: a. CC1(C)CC(NCc2ccncc2)CC(C)(C)N1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CC1(C)CC(NCc2ccncc2)CC(C)(C)N1
CC1(C)CC(NCc2ccncc2)CC(C)(C)N1
2,2,6,6-tetramethyl-N-(pyridin-4-ylmethyl)piperidin-4-amine