Task: Answer the multiple choice question.
Query: Which compound has a -17.618% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: O=[N+]([O-])c1cccc2c(N3CCOCC3)ccnc12
b: O=c1[nH]c2cc3c(cc2cc1CN(CCN1CCOCC1)C(=S)NCC1CCCO1)OCO3
c: Oc1ccc(/C=N/Nc2ccnc3cc(Cl)ccc23)c(O)c1O
d: COc1ccc(C2Nc3ccccc3C(=O)N2c2ccc(F)cc2)cc1Cn1nnc2ccccc21
Answer: a. O=[N+]([O-])c1cccc2c(N3CCOCC3)ccnc12
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=[N+]([O-])c1cccc2c(N3CCOCC3)ccnc12
O=[N+]([O-])c1cccc2c(N3CCOCC3)ccnc12
4-(8-nitroquinolin-4-yl)morpholine