2,2,4,4,6,6,8,8-Octamethyl-10,10-diphenyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane 50mg

2,2,4,4,6,6,8,8-Octamethyl-10,10-diphenyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane 50mg