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 additional words.
Options:
a: N=c1c(C(=O)NC2CCCCC2)cc2c(=O)n3ccccc3nc2n1Cc1ccc(F)cc1
b: O=C(OC(C(=O)NCc1cccs1)c1ccccc1F)c1ccco1
c: CCCS(=O)(=O)Nc1ccc2cn[nH]c2c1
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}