( ( ( ( ( ( If ( ( hydrogen atoms ) ( are mission ) ) ) ( , ( then ( ( the ( fatty acid ) ) ( is unsaturated ) ) ) ) ) , ) and ) ( ( the carbons ) ( share ( ( a ( double bond ) ) ( instead ( of ( a ( single bond ) ) ) ) ) ) ) ) . )
(ROOT (S (S (SBAR (IN If) (S (NP (NN hydrogen) (NNS atoms)) (VP (VBP are) (NP (NN mission))))) (, ,) (ADVP (RB then)) (NP (DT the) (JJ fatty) (NN acid)) (VP (VBZ is) (VP (VBN unsaturated)))) (, ,) (CC and) (S (NP (DT the) (NNS carbons)) (VP (VBP share) (NP (NP (DT a) (JJ double) (NN bond)) (PP (RB instead) (IN of) (NP (DT a) (JJ single) (NN bond)))))) (. .)))
If hydrogen atoms are mission, then the fatty acid is unsaturated, and the carbons share a double bond instead of a single bond.
(ROOT (S (NP (JJ Single) (NNS bonds)) (VP (VBP are) (ADVP (RB there)) (PP (IN between) (NP (NP (NN carbon) (NNS atoms)) (PP (IN in) (NP (JJ saturated) (NN fatty) (NNS acids)))))) (. .)))