Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: CCN(CC)C(=O)c1ccc(C2=CC3(CCN(C(C)=O)CC3)Oc3ccccc32)cc1
b: c1ccc(CN2CCCC(c3c(-c4ccccc4)[nH]c4ccccc34)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}
4-(1'-acetylspiro[chromene-2,4'-piperidine]-4-yl)-N,N-diethylbenzamide