Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a 4.437\% 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] O=S1(=O)N=C(SCCO)c2ccccc21
[b] COC(=O)c1ccc(N2CCN(C)CC2)c(NC(=O)c2cc3ccccc3o2)c1
[c] Cc1cc(C)nc(Nc2ncc(O)n2-c2ccc(C)c(C)c2)n1
[d] CC(CCc1ccccc1)NC(=O)C(=O)NCCO
Answer: a. O=S1(=O)N=C(SCCO)c2ccccc21
{#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=S1(=O)N=C(SCCO)c2ccccc21
O=S1(=O)N=C(SCCO)c2ccccc21
[O][=S][=Branch1][C][=O][N][=C][Branch1][Branch1][S][C][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=C]
2-[(1,1-dioxo-1,2-benzothiazol-3-yl)sulfanyl]ethanol