Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) CNC(=O)c1cc(OCC(F)(F)F)ccc1OCC(F)(F)F
(b) CCOC(=O)c1ccc(N2Cc3ccccc3C2=N)cc1
(c) COc1ccc(-c2csc(-c3ccc(O)cc3)n2)cc1
(d) Cc1cccc(NC(=O)c2sc(Cl)nc2-c2ccccc2)c1
Answer: b
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}