Task: Answer the multiple choice question.
Query: Which compound exhibits a -20.927\% 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: CCOc1ccc(C2C3=C(CCCC3=O)Nc3ccc4ncccc4c32)cc1
b: CCn1c2ccc(F)cc2c2nnc(SCCN3CCOCC3)nc21
c: Cc1cccc(NC(=O)c2ccc(Cl)c(NC(=O)c3ccncc3)c2)c1C
d: Cc1nonc1CC(=O)N1CCCC(C(=O)c2cccc(C(F)(F)F)c2)C1
e: COc1ccc(CC(=O)Nc2ccccc2N2CCCC2)cc1OC
Answer: b. CCn1c2ccc(F)cc2c2nnc(SCCN3CCOCC3)nc21
{#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#}
CCn1c2ccc(F)cc2c2nnc(SCCN3CCOCC3)nc21
CCn1c2ccc(F)cc2c2nnc(SCCN3CCOCC3)nc21
4-[2-[(5-ethyl-8-fluoro-[1,2,4]triazino[5,6-b]indol-3-yl)sulfanyl]ethyl]morpholine