Task: Answer the multiple choice question.
Query: Which compound has a 18.146\% 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) O=C(CCC(=O)N1CCOCC1)NCCc1ccc(Cl)cc1Cl
(b) O=c1cnnc(Nc2ccc(Nc3ccccc3)cc2)[nH]1
Answer: b. O=c1cnnc(Nc2ccc(Nc3ccccc3)cc2)[nH]1
{#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=c1cnnc(Nc2ccc(Nc3ccccc3)cc2)[nH]1
O=c1cnnc(Nc2ccc(Nc3ccccc3)cc2)[nH]1
3-(4-anilinoanilino)-4H-1,2,4-triazin-5-one