Task: Answer the multiple choice question.
Query: Which drug has a -23.145\% 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) Nc1nc(F)nc2c1ncn2[C@@H]1O[C@H](CO)[C@@H](O)[C@@H]1O
(b) O=C(C1=C[C@H](c2ccc(Br)cc2)C[C@H](OCCCCO)O1)N1CCN(Cc2ccccc2)CC1
Answer: b. O=C(C1=C[C@H](c2ccc(Br)cc2)C[C@H](OCCCCO)O1)N1CCN(Cc2ccccc2)CC1
{#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#}
O=C(C1=C[C@H](c2ccc(Br)cc2)C[C@H](OCCCCO)O1)N1CCN(Cc2ccccc2)CC1
O=C(C1=C[C@H](c2ccc(Br)cc2)C[C@H](OCCCCO)O1)N1CCN(Cc2ccccc2)CC1
(4-benzylpiperazin-1-yl)-[(2R,4R)-4-(4-bromophenyl)-2-(4-hydroxybutoxy)-3,4-dihydro-2H-pyran-6-yl]methanone