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, c, or d without using any additional words.
Options:
a CC1CCN(c2cc(Br)c([N+](=O)[O-])cc2F)CC1
b O=C(c1cccs1)N1CCC(C(=O)N2CCN(Cc3ccc4c(c3)OCO4)CC2)CC1
c COc1cccc(NC(=O)CN(C)C(=O)CC2CC3CCC2C3)c1
d CCOC(=O)c1sc(-c2ccccc2)nc1C
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}