Commission Implementing Regulation (EU) 2017/59 of 14 December 2016 concerning the authorisation of 1,1-dimethoxy-2-phenylethane, phenethyl formate, phenethyl octanoate, phenethyl isobutyrate, phenethyl 2-methyl-butyrate and phenethyl benzoate as feed additives for all animal species (Text with EEA relevance. )