( ( ( ( ( ( Once ingested ) ( the methanol ) ) , ) ( wood alcohol ) ) , ) ( ( converts ( into ( ( ( ( formaldehyde and ) formic ) acid ) ( -LRB- ( ( ant ( sting poison ) ) -RRB- ) ) ) ) ) . ) )
(ROOT (S (NP (NP (ADJP (RB Once) (JJ ingested)) (DT the) (NN methanol)) (, ,) (NP (NN wood) (NN alcohol)) (, ,)) (VP (VBZ converts) (PP (IN into) (NP (NP (ADJP (JJ formaldehyde) (CC and) (JJ formic)) (NN acid)) (PRN (-LRB- -LRB-) (NP (CD ant) (NN sting) (NN poison)) (-RRB- -RRB-))))) (. .)))
Once ingested the methanol, wood alcohol, converts into formaldehyde and formic acid (ant sting poison).
(ROOT (S (NP (JJ Formic) (NN acid)) (VP (VBZ is) (VP (VBN found) (PP (IN in) (NP (NP (DT the) (NNS secretions)) (PP (IN of) (NP (JJ stinging) (NNS ants))))))) (. .)))