Task: Answer the MCQ question.
Query: Which compound exhibits a 19.868\% 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: CCC(=NCCc1ccccc1)c1c(O)n(C2CCCCC2)c(=O)[nH]c1=O
b: CCc1nnc(NC(=O)C2CCCN2C(=O)Nc2ccccc2OC)s1
c: C1CN(CC23CC4CC(CC(C4)C2)C3)CCO1.Cl
d: Cc1nc2cc(Cl)c(Cl)cc2nc1C
Answer: c. C1CN(CC23CC4CC(CC(C4)C2)C3)CCO1.Cl
{#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#}
C1CN(CC23CC4CC(CC(C4)C2)C3)CCO1.Cl
C1CN(CC23CC4CC(CC(C4)C2)C3)CCO1.Cl
4-(1-adamantylmethyl)morpholine;hydrochloride