There is provided a composition for forming a monolayer or a multilayer on the substrate. A composition for forming a monolayer or a multilayer containing a silane compound of Formula (1A) or Formula (1B): [where R1s are independently a methyl group or an ethyl group; Xs are independently a C1-10 linking group; and Zs are independently a C1-10 alkyl group or a phenyl group optionally having a substituent, where X optionally contains at least one oxygen atom or sulfur atom in the main chain thereof, and when Z is an alkyl group, at least one hydrogen atom of the alkyl group is optionally substituted with a fluorine atom] and an organic solvent.