Task: Answer the MCQ question.
Query: Which drug has a -6.465\% 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: CCCC(=O)NC(c1cccs1)c1cc([N+](=O)[O-])c2cccnc2c1O
b: O=C(CC1Oc2ccccc2NC1=O)NCCCN1CCCC1=O
Answer: b. O=C(CC1Oc2ccccc2NC1=O)NCCCN1CCCC1=O
{#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(CC1Oc2ccccc2NC1=O)NCCCN1CCCC1=O
O=C(CC1Oc2ccccc2NC1=O)NCCCN1CCCC1=O
2-(3-oxo-4H-1,4-benzoxazin-2-yl)-N-[3-(2-oxopyrrolidin-1-yl)propyl]acetamide