Task: Answer the MCQ question.
Question: Which drug exhibits a 0.550\% 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] COc1ccc(-c2nc3ccccc3c(=O)n2CCOc2c(C)cccc2C)cc1
[b] CCN1CCN(C(=O)C(C)Nc2ccc(OC)cc2OC)CC1
[c] O=C1CC(N2CCN(c3ccc(F)cc3)CC2)C(=O)N1c1ccc(F)cc1
[d] O=C(c1ccco1)N1CCN(S(=O)(=O)c2ccc(Br)s2)CC1
Answer: b. CCN1CCN(C(=O)C(C)Nc2ccc(OC)cc2OC)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#}
CCN1CCN(C(=O)C(C)Nc2ccc(OC)cc2OC)CC1
CCN1CCN(C(=O)C(C)Nc2ccc(OC)cc2OC)CC1
2-(2,4-dimethoxyanilino)-1-(4-ethylpiperazin-1-yl)propan-1-one