Task: Answer the multiple choice question.
Question: Which drug exhibits a -1.542\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a) COc1nc(N=C(N)N)nc2c(C)cccc12
b) CCc1c(O)nc(N2CCN(Cc3ccccc3)CC2)[nH]c1=O
Answer: a. COc1nc(N=C(N)N)nc2c(C)cccc12
{#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#}
COc1nc(N=C(N)N)nc2c(C)cccc12
COc1nc(N=C(N)N)nc2c(C)cccc12
2-(4-methoxy-8-methylquinazolin-2-yl)guanidine