Complex sentence: His first corn flake product, originally called "Elijah's Manna," did not appear until 1904 and owing to consumer resistance to the biblical reference, was renamed "Post Toasties" in 1907.
Split into simpler sentences: His first corn flake product, originally called "Elijah's Manna," appeared in 1904. Owing to consumer resistance to the biblical reference, it was renamed Post Toasties in 1907.