What is the name of phthalic anahydrine plus sulphuric acid plus sodium hydroxide (C8H7O8NaS)?

There is no substance called "phthalic anahydrine". Maybe you meant phthalic anhydride, the nearest name that I can find in a search. Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. That plus H2SO4 gives you six carbons and seven oxygens, so it's a bit of a stretch to get from there to a substance with eight carbons and eight oxygens. You can not stand spelling mistrakes in this business.