Task: Answer the multiple choice question.
Query: Which drug exhibits a 0.837\% human ether-à-go-go related gene (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. COc1cccc2cc(C(=O)OC(C)C(=O)c3ccc(C)cc3)c(=O)oc12
b. CCCC[n+]1ccn(C2=C([O-])c3ccccc3C(=O)/C2=N\S(=O)(=O)c2ccc(Cl)cc2)c1
c. CCC(C(=O)Nc1cnccn1)c1ccccc1
d. Cc1cc2c(cc1S(=O)(=O)N1CCN(c3ccc(Cl)cc3)CC1)OCCN2C
Answer: c. CCC(C(=O)Nc1cnccn1)c1ccccc1
{#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#}
CCC(C(=O)Nc1cnccn1)c1ccccc1
CCC(C(=O)Nc1cnccn1)c1ccccc1
2-phenyl-N-pyrazin-2-ylbutanamide