Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
(a) O=C(NCc1ccccc1)N1CCC(n2cnc3cc(F)ccc32)CC1
(b) Cc1ccc(N=C2NC(=O)/C(=C/c3cccnc3)S2)c(C)c1
(c) Oc1[nH]c(=S)sc1/C=C1\C(c2ccccc2)=Nc2ccccc21
(d) CC(C)(C)n1ncc2c(=O)n(CC(=O)NCc3ccccc3Cl)cnc21
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__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_inhib%}
Answer: {%multiple_choice_result}