Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, or c without using any additional words.
Options:
[a] CSC(C)=NOC(=O)N(C)SN(C(C)C)P1(=S)OCCCO1
[b] CN(C)CC(=O)NN=Cc1c(-c2ccc(Cl)cc2)nc2n1CCS2
[c] CCC1(NC(N)=O)CCCC1
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}