Complex sentence: Sachs declares that he has no intention of wooing Eva, and denies having written the song (although he admits that the handwriting is his), and gives the manuscript to Beckmesser as a gift.
Split into simpler sentences: Sachs declares that he has no intention of wooing Eva, and denies having written the song (although he admits that the handwriting is his). He gives the manuscript to Beckmesser as a gift.