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, c, or d without using any other words.
Options:
a: COP(=O)(OC)Oc1nc(Cl)c(Cl)cc1Cl
b: CCOP(=S)(OCC)OCCSCC
c: Cn1c(=O)c2c(ncn2CC2SCCS2)n(C)c1=O
d: CCSC(=S)N(CC)CC
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}