Problem statement: Answer the multiple-choice question.
Query: Which compound has a 6.642\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CC1CCCCN1CCNC(=O)CN1C(=O)CSc2ccc(S(=O)(=O)N3CCCCC3)cc21
(b) O=C(Oc1ccnc2cc(Cl)ccc12)N1CCOCC1
Answer: b. O=C(Oc1ccnc2cc(Cl)ccc12)N1CCOCC1
{#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(Oc1ccnc2cc(Cl)ccc12)N1CCOCC1
O=C(Oc1ccnc2cc(Cl)ccc12)N1CCOCC1
(7-chloroquinolin-4-yl)morpholine-4-carboxylate