The figure shows the bond-line formula of a compound with a carbon-carbon double bond, a ketone group and an alcohol group. To name it, a student must choose the principal group by NCERT's order of priority, number the chain so that the locants come out right, and then write the prefixes in alphabetical order. What is the IUPAC name of the compound?

Fig. 1: A bond-line formula of an open-chain compound with five carbons in the main chain. From the left: a terminal carbon-carbon double bond, then a carbon with a double bond to an oxygen atom, O, then a carbon carrying a methyl branch, and then a CH2 carbon joined to an OH group. Hydrogen atoms on carbon are not drawn.