Problem statement: Answer the multiple choice question.
Query: Which drug has a 21.106\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: O=c1c2c(nc3c(-c4ccccc4)c[nH]n13)CCC2
b: CC(C)OCCCNC(=O)C(=O)N/N=C/c1ccc(OCc2ccccc2)cc1
c: O=C(Cc1ccc([N+](=O)[O-])cc1)c1c(O)cc(O)cc1O
Answer: a. O=c1c2c(nc3c(-c4ccccc4)c[nH]n13)CCC2
{#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#}
10-phenyl-1,8,12-triazatricyclo[7.3.0.03,7]dodeca-3(7),8,10-trien-2-one