Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
(a) O=C(NC(=S)NCc1ccc(F)cc1)c1ccccc1
(b) CCCCOCCCn1c(-c2ccco2)nc2nc3ccccc3nc21
(c) CCCN(Cc1cc2ccccc2[nH]c1=O)C(=O)c1cccc([N+](=O)[O-])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}