Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a 21.096\% 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: CCCCOC(=O)NC(NCC(O)c1ccccc1)(C(F)(F)F)C(F)(F)F
b: COc1ccc(NC(=O)c2cc3cc(OC)ccc3oc2=N)cc1
c: CC(=O)Nc1ccnc(-c2cccnc2)n1
d: Cc1ccc(O)c(NC(=O)c2cccc(NC(=O)c3ccco3)c2)c1
Answer: b. COc1ccc(NC(=O)c2cc3cc(OC)ccc3oc2=N)cc1
{#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#}
2-imino-6-methoxy-N-(4-methoxyphenyl)chromene-3-carboxamide