Task: Answer the multiple-choice question.
Query: Which compound exhibits a -1.127\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) CCC1CCCCN1CCCNC(=O)CN1C(=O)CSc2ccc(S(=O)(=O)N3CCC(C)CC3)cc21
(b) O=C1CCCc2c1nc(-c1cccc(Cl)c1)n2O
(c) Nc1[nH]c(N=NC(=O)c2ccc(F)cc2)c2ccccc12
(d) Cc1ccc2c(COC(=O)CNC(=O)c3ccccc3)cc(=O)oc2c1
Answer: b. O=C1CCCc2c1nc(-c1cccc(Cl)c1)n2O
{#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=C1CCCc2c1nc(-c1cccc(Cl)c1)n2O
O=C1CCCc2c1nc(-c1cccc(Cl)c1)n2O
2-(3-chlorophenyl)-1-hydroxy-6,7-dihydro-5H-benzimidazol-4-one