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 O=C(Nc1c2c(nn1-c1ccc([N+](=O)[O-])cc1)CS(=O)(=O)C2)c1ccco1
b CCCN1CCN(C(=O)C2CCN(c3nnc(C)c4c(C)n(-c5ccc(C)cc5)nc34)CC2)CC1
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}