Complex sentence: Milton's sonnet does not follow the Shakespearean sonnet form, however; it does have three quatrains and finishes with a couplet, this sonnet follows ABBA, ABBA, CDCDCD rhyme scheme.
Split into simpler sentences: Milton's sonnet does not follow the Shakespearean sonnet form, however. This sonnet follows the ABBA, ABBA, CDCDCD rhyme scheme.