Problem statement: Answer the multiple choice question.
Query: Which compound has a 1.853\% 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 Cn1c(C(=O)NCCCN2CCOCC2)cc2c(=O)n(C)c3ccccc3c21
b COc1ccc2nc(SCC(C)=O)c(C#N)cc2c1
c O=C(CSc1ncccn1)Nc1cc(Cl)ccc1[N+](=O)[O-]
d O=C(NCCOCc1ccc(Cl)cc1)c1ncn[nH]1
Answer: b. COc1ccc2nc(SCC(C)=O)c(C#N)cc2c1
{#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#}
6-methoxy-2-(2-oxopropylsulfanyl)quinoline-3-carbonitrile