Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a CCn1cc(S(=O)(=O)NCCc2ccc(F)cc2)cn1
b COc1ccc(C(=O)c2c3ccc(C(F)(F)F)cc3[n+]([O-])n2CCC[NH3+])cc1.[Cl-]
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}