The inveniton disclsoes a composition and a method of forming cyclododecatriene trialdehyde by hydroformylation of cyclododecatriene and conversion of hte cyclododecatriene trialdehyde into polyphenol represented as hte formula I, wherein R, m, p and Q are defined as the specification, the inventino also disclsoes a curable composition inlcuding hte compound I, comprising a powder coating composition, and as well as the method of curing hte composition.