Task: Answer the multiple-choice question.
Question: Which drug has a 9.429\% 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 other words.
Options:
a. O=C(NCCCl)Nc1cc([N+](=O)[O-])ccc1Cl
b. CN(C)c1ccnc(-n2cccc2/C=N/O)c1C#N
c. COCCNc1c2c(c(C#N)c3nc4ccccc4n13)CCCC2
d. COc1cc2c(cc1NC(=O)c1cccc([N+](=O)[O-])c1C)oc1ccccc12
Answer: a. O=C(NCCCl)Nc1cc([N+](=O)[O-])ccc1Cl
{#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(NCCCl)Nc1cc([N+](=O)[O-])ccc1Cl
O=C(NCCCl)Nc1cc([N+](=O)[O-])ccc1Cl
1-(2-chloroethyl)-3-(2-chloro-5-nitrophenyl)urea