Task: Answer the multiple choice question.
Query: Which drug has a -0.200\% 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=C(NCCc1ccccc1)N1c2ccccc2Sc2ccccc21
(b) COc1cccc2c1O/C(=N\O)C(C(=O)Nc1cccc(Br)c1)C2
(c) COc1ccc(-c2ccc(OC)cc2)cc1
(d) Cc1cc([N+](=O)[O-])ccc1Nc1nc2ccccc2n2cnnc12
Answer: a. O=C(NCCc1ccccc1)N1c2ccccc2Sc2ccccc21
{#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=C(NCCc1ccccc1)N1c2ccccc2Sc2ccccc21
O=C(NCCc1ccccc1)N1c2ccccc2Sc2ccccc21
N-(2-phenylethyl)phenothiazine-10-carboxamide