Problem statement: Answer the multiple choice question.
Question: Which drug exhibits a -22.779\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a: COC(=O)N/N=C(\C)c1ccc(OC(F)F)cc1OC(F)F
b: O=C(c1oc(=O)c2ccccc2c1-c1ccccc1)N1CCN(C2CCCCC2)CC1
c: CN(C)c1cc[n+](CC(=O)Nc2ccc([N+](=O)[O-])cc2Cl)cc1.[Cl-]
d: Cc1ccc(C(=O)c2c(NC(=O)CSc3nnc(N)s3)sc3c2CCCC3)cc1
Answer: b. O=C(c1oc(=O)c2ccccc2c1-c1ccccc1)N1CCN(C2CCCCC2)CC1
{#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#}
3-(4-cyclohexylpiperazine-1-carbonyl)-4-phenylisochromen-1-one