[({](\d{4}),?(\d{2}),?(\d{2})(?:[i,]?(\d{2})(?:[s,]?(\d{2}))?)?[)}]

Add a description of [({](\d{4}),?(\d{2}),?(\d{2})(?:[i,]?(\d{2})(?:[s,]?(\d{2}))?)?[)}]