Compounds of Formula (I): pharmaceutically acceptable salts thereof, deuterated derivatives of any of the foregoing, and metabolites of any of the foregoing are disclosed. Pharmaceutical compositions comprising the same, methods of treating cystic fibrosis using the same, and methods for making the same are also disclosed. Also disclosed are solid state forms of Compound 1 and salts and solvates thereof.本文揭示式(I)化合物, 其醫藥學上可接受之鹽、上述任一者之氘化衍生物及上述任一者之代謝物。本文亦揭示包含上述各項之醫藥組合物、使用上述各項來治療囊性纖維化之方法及製備上述各項之方法。本文亦揭示化合物1及其鹽及溶劑合物之固態形式。