A method for manufacturing a compound represented by Formula or a salt thereof, comprising: a step of reacting a compound represented by Formula or a salt thereof in the formula, R 1 represents a hydrogen atom or an amino-protecting group; R 2 represents a carboxyl-protecting group; L 1 represents a group represented by Formula in the formula, R 3a, R 4a, R 5a, and R 6a are the same as or different from each other and represent a hydrogen atom or a C 1-6 alkyl group; p 1 represents an integer of 1 to 3; q 1 represents an integer of 0 to 3; and r 1 represents an integer of 1 to 6; and L 2 represents a group represented by Formula in the formula, R 3b, R 4b, R 5b, and R 6b are the same as or different from each other and represent a hydrogen atom or a C 1-6 alkyl group; p 2 represents an integer of 1 to 3, q 2 represents an integer of 0 to 3; and r 2 represents an integer of 1 to 6; with a compound represented by Formula or a salt thereof in the formula, L 3 represents a group represented by Formula in the formula, R 3c, R 4c, R 5c, and R 6c are the same as or different from each other and represent a hydrogen atom or a C 1-6 alkyl group; p 3 represents an integer of 1 to 3; q 3 represents an integer of 0 to 3; and r 3 represents an integer of 1 to 6; A 1 represents any one of the groups represented by Formulae to in the formulae, * represents a binding position; and R 7 's are the same as or different from each other and represent a carboxyl-protecting group; and m represents an integer of 1 to 3; so as to obtain a compound represented by Formula or a salt thereof; in the formula, R 1, R 2, L 1, L 2, L 3, A 1, and m have the same definition as R 1, R 2, L 1, L 2, L 3, A 1, and m described above; and a step of deprotecting the compound represented by Formula or a salt thereof, in the formula, A 2 represents any one of the groups represented by Formulae to in the formulae, * represents a binding position; and L 1, L 2, L 3, and m have the same definition as L 1, L 2, L 3, and m described above. a step of reacting a compound represented by Formula or a salt thereof in the formula, R 1 represents a hydrogen atom or an amino-protecting group; R 2 represents a carboxyl-protecting group; L 1 represents a group represented by Formula in the formula, R 3a, R 4a, R 5a, and R 6a are the same as or different from each other and represent a hydrogen atom or a C 1-6 alkyl group; p 1 represents an integer of 1 to 3; q 1 represents an integer of 0 to 3; and r 1 represents an integer of 1 to 6; and L 2 represents a group represented by Formula in the formula, R 3b, R 4b, R 5b, and R 6b are the same as or different from each other and represent a hydrogen atom or a C 1-6 alkyl group; p 2 represents an integer of 1 to 3, q 2 represents an integer of 0 to 3; and r 2 represents an integer of 1 to 6; with a compound represented by Formula or a salt thereof in the formula, L 3 represents a group represented by Formula in the formula, R 3c, R 4c, R 5c, and R 6c are the same as or different from each other and represent a hydrogen atom or a C 1-6 alkyl group; p 3 represents an integer of 1 to 3; q 3 represents an integer of 0 to 3; and r 3 represents an integer of 1 to 6; A 1 represents any one of the groups represented by Formulae to in the formulae, * represents a binding position; and R 7 's are the same as or different from each other and represent a carboxyl-protecting group; and m represents an integer of 1 to 3; so as to obtain a compound represented by Formula or a salt thereof; in the formula, R 1, R 2, L 1, L 2, L 3, A 1, and m have the same definition as R 1, R 2, L 1, L 2, L 3, A 1, and m described above; and a step of deprotecting the compound represented by Formula or a salt thereof, in the formula, A 2 represents any one of the groups represented by Formulae to in the formulae, * represents a binding position; and L 1, L 2, L 3, and m have the same definition as L 1, L 2, L 3, and m described above.