Task: Answer the multiple choice question.
Query: Which drug has a 18.697\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a O=P(c1ccccc1)(c1ccccc1)C(O)c1ccncc1
b c1ccc(-c2c3ccccc3nc3[nH]c4ccccc4c23)cc1
c Cc1c(C(=O)N2CCCCCC2)c(S(=O)(=O)Nc2ccccc2F)c(C)n1C
d O=C1CCCC(=O)C1C1c2ccccc2CCN1C(=O)CCl
Answer: a. O=P(c1ccccc1)(c1ccccc1)C(O)c1ccncc1
{#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=P(c1ccccc1)(c1ccccc1)C(O)c1ccncc1
O=P(c1ccccc1)(c1ccccc1)C(O)c1ccncc1
diphenylphosphoryl(pyridin-4-yl)methanol