It's a baby. It has a beating heart. It is a living human being. Your graphic is deliberately inaccurate. The nervous system and brain are developing. It doesn't matter that it cannot survive outside the womb. That doesn't make it any less human. "It's a parasite", you say. So what? So are you, right now. You cannot survive without the oxygen, and water, and food provided by the earth. You began life as a parasite and will remain one as long as you live.
The most basic argument about abortion is this simple: "if a woman it wants it, it's a baby. If she doesn't, it's 'tissue.'" That is bs. It is always a living human being, whatever stage of development it's at. That includes already born humans at various stages of development into adulthood and beyond. Human development is a continuum, and we remain parasites. And no, we do not think a six week baby is a fully formed pre-born baby.
The fetus at six weeks:
https://www.babycenter.com/6-weeks-pregnant