Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a. O=C(CSc1nnc(-c2cccnc2)n1Cc1ccco1)c1ccc(Br)cc1
b. O=C(Nc1ccc(C(F)(F)F)cc1-c1ccccc1)c1ccccc1
c. COc1ccc(CCNC(=O)C(=O)NCC2CCCN2S(=O)(=O)c2ccc(OC)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}