Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a. C=CCn1c(C)cc(OP(=O)(OC)OC)cc1=O
b. Nc1nc2cc(Cl)c(Br)cc2o1
c. OC(CCl)CNCCNCC(O)CCl
d. CCC(CC)COCCOC(=O)CCCCC(=O)OCCOCC(CC)CC
Answer: d
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}