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 or b without using any other words.
Options:
(a) Cc1cccc(NC(=O)CSc2nc3ccc(NC(=O)CSc4nnnn4-c4ccccc4)cc3s2)c1C
(b) Cc1cc(N2CCN(C(=O)c3ccco3)CC2)c2ccccc2n1
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}