Sentence 1: Spurrite is a white , yellow or light blue mineral with monoclinic crystals . Its chemical formula is Ca ( SiO ) CO .
Sentence 2: Spurrite is a white , yellow or light blue mineral with monoclinic crystals , the chemical formula of which is Ca ( SiO ) CO .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?