An organopolysiloxane composition comprising: organopolysiloxane having at least two silicon-bonded alkenyl groups per molecule, organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, platinum hydrosilylation catalyst, and compound having the formula or: R 1 -Si(R 1) a {[X-Si(R 1) 2] b -R 1} c R 1 -Si(R 1) a {(Z i)} c wherein each R 1 independently is a monovalent organic group selected from an optionally substituted C 1 -C 30 monovalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, and an organic group having the formula: -Y-NC wherein Y is an optionally substituted C 1 -C 30 divalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, one to three of all groups R 1 being an organic group of formula, each X independently is an oxygen atom, or an optionally substituted C 1 -C 30 divalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, and two groups R 1 may bond together to form a crosslinking group Z to form a cyclic structure, wherein Z has the same meaning as X, a is an integer of 0 to 3, c is an integer of 0 to 3, a+c is 3, b is an integer of 1 to 300, Zi is a group of the formula: -X-Si(R 1) j (Z i+1) (3-j) wherein i indicative of a hierarchy is an integer of 1 to 10, j is an integer of 0 to 3, j associated with at least one of all hierarchies is 0 or 1, the lowest hierarchy is j=3. organopolysiloxane having at least two silicon-bonded alkenyl groups per molecule, organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, platinum hydrosilylation catalyst, and compound having the formula or: R 1 -Si(R 1) a {[X-Si(R 1) 2] b -R 1} c R 1 -Si(R 1) a {(Z i)} c wherein each R 1 independently is a monovalent organic group selected from an optionally substituted C 1 -C 30 monovalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, and an organic group having the formula: -Y-NC wherein Y is an optionally substituted C 1 -C 30 divalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, one to three of all groups R 1 being an organic group of formula, each X independently is an oxygen atom, or an optionally substituted C 1 -C 30 divalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, and two groups R 1 may bond together to form a crosslinking group Z to form a cyclic structure, wherein Z has the same meaning as X, a is an integer of 0 to 3, c is an integer of 0 to 3, a+c is 3, b is an integer of 1 to 300, Zi is a group of the formula: -X-Si(R 1) j (Z i+1) (3-j) wherein i indicative of a hierarchy is an integer of 1 to 10, j is an integer of 0 to 3, j associated with at least one of all hierarchies is 0 or 1, the lowest hierarchy is j=3. wherein each R 1 independently is a monovalent organic group selected from an optionally substituted C 1 -C 30 monovalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, and an organic group having the formula: -Y-NC wherein Y is an optionally substituted C 1 -C 30 divalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, one to three of all groups R 1 being an organic group of formula, each X independently is an oxygen atom, or an optionally substituted C 1 -C 30 divalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, and two groups R 1 may bond together to form a crosslinking group Z to form a cyclic structure, wherein Z has the same meaning as X, a is an integer of 0 to 3, c is an integer of 0 to 3, a+c is 3, b is an integer of 1 to 300, Zi is a group of the formula: -X-Si(R 1) j (Z i+1) (3-j) each X independently is an oxygen atom, or an optionally substituted C 1 -C 30 divalent organic group, which may have at least one intervening atom selected from oxygen, nitrogen, sulfur and phosphorus, and two groups R 1 may bond together to form a crosslinking group Z to form a cyclic structure, wherein Z has the same meaning as X, a is an integer of 0 to 3, c is an integer of 0 to 3, a+c is 3, b is an integer of 1 to 300, Zi is a group of the formula: -X-Si(R 1) j (Z i+1) (3-j) wherein i indicative of a hierarchy is an integer of 1 to 10, j is an integer of 0 to 3, j associated with at least one of all hierarchies is 0 or 1, the lowest hierarchy is j=3.