Task: Answer the multiple-choice question.
Query: Which drug has a -21.542\% 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 CCOC(=O)N1CCN(C(=O)c2cc(COc3ccc4ncccc4c3)on2)CC1
b CS(=O)(=O)Nc1ccc(C(=O)Nc2ccccc2C(=O)N2CCCC2)cc1
c C=CCNC(=O)NC(=O)COC(=O)COc1ccc(Br)cc1F
d O=C(CSc1nc2ccccc2o1)Nc1ccc(Cl)cc1
Answer: d. O=C(CSc1nc2ccccc2o1)Nc1ccc(Cl)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#}
2-(1,3-benzoxazol-2-ylsulfanyl)-N-(4-chlorophenyl)acetamide