、。
Right? Don't you think so?
Literal
Hey, that's-so [isn't-it-でしょう].
A minimal conversational bid for agreement. ねえ is the attention-getting interjection. そうでしょう ('that's right, isn't it?') uses the conjectural/rhetorical でしょう to seek confirmation. The whole utterance is two words — pure spoken Japanese, the kind of thing said after making a point, looking for the listener to nod. Context-dependent: could be teasing, earnest, or rhetorical.