Task: Answer the multiple choice question.
Query: Which drug exhibits a 1.718\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
[a] O=c1[nH]c(=S)c2ncn(-c3ccccc3)c2[nH]1
[b] CC1(C)N(O)C2CCCCC2N1O
[c] Cc1cc(CNCc2c(C(=O)N3CCCCCCC3)nc3ccc(Cl)cn23)nn1C
[d] Nc1ccc2nc(-c3ccccc3)cnc2c1
[e] O=C(COc1ccc([N+](=O)[O-])cc1Cl)Nn1cnnc1
Answer: b. CC1(C)N(O)C2CCCCC2N1O
{#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#}
CC1(C)N(O)C2CCCCC2N1O
CC1(C)N(O)C2CCCCC2N1O
1,3-dihydroxy-2,2-dimethyl-3a,4,5,6,7,7a-hexahydrobenzimidazole