Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. CCN=C(NS(=O)(=O)c1cccc(Cl)c1)N1CC2(C=N1)CCNCC2
b. CS(=O)(=O)C1CCN(Cc2ccnc(Nc3ncc(C#N)s3)c2)CC1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
N-(3-chlorophenyl)sulfonyl-N'-ethyl-2,3,8-triazaspiro[4.5]dec-3-ene-2-carboximidamide