Task: Answer the multiple-choice question.
Question: Which compound exhibits a 0.553\% 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(CSc1nnc(NCc2ccccc2)s1)N1CCOCC1
(b) CC(NC(=O)Nc1ccccc1)C(c1cccs1)N1CCN(C)CC1
Answer: a. O=C(CSc1nnc(NCc2ccccc2)s1)N1CCOCC1
{#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(CSc1nnc(NCc2ccccc2)s1)N1CCOCC1
O=C(CSc1nnc(NCc2ccccc2)s1)N1CCOCC1
2-[[5-(benzylamino)-1,3,4-thiadiazol-2-yl]sulfanyl]-1-morpholin-4-ylethanone