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) N#Cc1nc(-c2ccc(F)cc2)oc1N1CCN(C(=O)c2ccco2)CC1
b) CCn1c(C)c(C2=CCN(S(=O)(=O)c3ccc(C)cc3)CC2)c2ccccc21
c) CCOC(CCn1c(SCc2cccc([N+](=O)[O-])c2)nc2ccccc2c1=O)OCC
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}