Task: Answer the multiple-choice question.
Query: Which compound exhibits a -19.218\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a O=C(NCCN1C(=O)S/C(=C\c2ccc(OC(F)F)cc2)C1=O)c1cnccn1
b C=CC1CN2CCC1CC2C(OC(C)=O)c1ccnc2ccc(OC)cc12
Answer: a. O=C(NCCN1C(=O)S/C(=C\c2ccc(OC(F)F)cc2)C1=O)c1cnccn1
{#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(NCCN1C(=O)S/C(=C\c2ccc(OC(F)F)cc2)C1=O)c1cnccn1
O=C(NCCN1C(=O)S/C(=C\c2ccc(OC(F)F)cc2)C1=O)c1cnccn1
N-[2-[(5Z)-5-[[4-(difluoromethoxy)phenyl]methylidene]-2,4-dioxo-1,3-thiazolidin-3-yl]ethyl]pyrazine-2-carboxamide