an N(3)-methyl-2'-deoxycytidine in double-stranded DNA + H2O = 3-methylcytosine + a 2'-deoxyribose 5'-monophosphate in double-stranded DNA + H(+)
an n(3)-methyl-2'-deoxycytidine in double-stranded dna + h2o = 3-methylcytosine + a 2'-deoxyribose 5'-monophosphate in double-stranded dna + h(+)