8-oxo-dGDP phosphatase NUDT18 (EC 3.6.1.58) (EC 3.6.1.68) (EC 3.6.1.76) (2-hydroxy-dADP phosphatase) (7,8-dihydro-8-oxoguanine phosphatase) (MutT homolog 3) (Nucleoside diphosphate-linked moiety X motif 18) (Nudix motif 18)