1. The problem statement, all variables and given/known data I have to name the particular molecule that i am looking at and fill in the blanks with that name. 2. Relevant equations Choose from: 2-methoxybutane, 3-butene, 1-butene, butanal, 2-chlorobutane, ethylmethyl ether, butylmethyl ether, or 2-butanone 3. The attempt at a solution The first thing that I did was identify the central molecule as 2-butanol, but i am no quite sure what the arrows indicate. Whether its the removal of the compound next to the arrow or the addition of it; if someone could identify the type of diagram and nudge me in the right direction that would be fantastic!