Task: Answer the multiple choice question.
Question: Which drug exhibits a 18.743\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any other words.
Options:
a: O=C(O)COc1c(Cl)cccc1Cl
b: COc1cc(CNC(C)(C)CO)cc(Br)c1OCc1ccc(Cl)cc1Cl
c: O=S(=O)(NCc1ccc2c(c1)OCO2)c1cnc[nH]1
d: COc1ccccc1N1CCN(C(CNC(=O)Oc2ccccc2)c2cccnc2)CC1
e: Nc1ccc(C(O)(C(F)(F)F)C(F)(F)F)cc1
Answer: a. O=C(O)COc1c(Cl)cccc1Cl
{#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(O)COc1c(Cl)cccc1Cl
O=C(O)COc1c(Cl)cccc1Cl
2-(2,6-dichlorophenoxy)aceticacid