Without knowing the exact poison, no.
1	Without	without	SCONJ	IN	_	2	mark	2:mark	_
2	knowing	know	VERB	VBG	VerbForm=Ger	0	root	0:root	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	5:det	_
4	exact	exact	ADJ	JJ	Degree=Pos	5	amod	5:amod	_
5	poison	poison	NOUN	NN	Number=Sing	2	obj	2:obj	SpaceAfter=No
6	,	,	PUNCT	,	_	2	punct	2:punct	_
7	no	no	INTJ	UH	_	2	discourse	2:discourse	SpaceAfter=No
8	.	.	PUNCT	.	_	2	punct	2:punct	_
