Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a -1.917\% 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. CCOc1cccc(C(=O)Nc2ccc3oc(-c4cccnc4)nc3c2)c1
b. O=C(O)CSCc1cn2cc(Cl)ccc2n1
Answer: b. O=C(O)CSCc1cn2cc(Cl)ccc2n1
{#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(O)CSCc1cn2cc(Cl)ccc2n1
O=C(O)CSCc1cn2cc(Cl)ccc2n1
[O][=C][Branch1][C][O][C][S][C][C][=C][N][C][=C][Branch1][C][Cl][C][=C][C][Ring1][#Branch1][=N][Ring1][#Branch2]
2-[(6-chloroimidazo[1,2-a]pyridin-2-yl)methylsulfanyl]acetic acid