Task: Answer the multiple-choice question.
Question: Which compound has a 5.158\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) COc1cccc(-n2nnnc2SCC(=O)NCc2ccco2)c1
(b) Cc1nc(N2CCC(C)CC2)c2oc3ccccc3c2n1
(c) O=C(CCc1nnc(CCCCc2ccccc2)o1)NCCN1CCOC1=O
(d) O=C(O)CCCC(=O)N1CCN(C(c2ccccc2)c2ccccc2)CC1
Answer: d. O=C(O)CCCC(=O)N1CCN(C(c2ccccc2)c2ccccc2)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#}
1-(4-benzhydrylpiperazin-1-yl)-5-hydroxypentane-1,5-dione