Task: Answer the multiple choice question.
Query: Which drug exhibits a 18.051\% hERG inhibition at 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(COC(=O)c1cccc(O)c1)Nc1nnc(-c2ccccc2)o1
b: COc1ccc(C2C(C(C)=O)=C(O)C(=O)N2c2nccs2)cc1OC
c: O=C(CCCC1=NS(=O)(=O)c2ccccc2N1)N1CCN(c2ccc([N+](=O)[O-])cc2)CC1
d: CCC(=O)N(Cc1ccco1)Cc1cc2cc3c(cc2[nH]c1=O)OCO3
Answer: a. O=C(COC(=O)c1cccc(O)c1)Nc1nnc(-c2ccccc2)o1
{#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(COC(=O)c1cccc(O)c1)Nc1nnc(-c2ccccc2)o1
O=C(COC(=O)c1cccc(O)c1)Nc1nnc(-c2ccccc2)o1
[2-oxo-2-[(5-phenyl-1,3,4-oxadiazol-2-yl)amino]ethyl] 3-hydroxybenzoate