Compound Having Unsaturated Double Bond, Composition Comprising The Compound, Polybenzoxazole, And Polybenzoxazole Film For Semiconductor Device

A compound having unsaturated double bonds represented by the following formula (1):

• wherein A1 represents a divalent linking group represented by the following formula (1-1), (1-2), or (1-3):
• wherein ring a represents a benzene ring or a cyclohexane ring;
• X represents a direct bond or a divalent linking group, and when two or more Xs are present in the formula (1), the two or more Xs may be the same or different from each other;
• Z represents a monovalent substituent bonded to ring a, and when two or more Zs are present in the formula (1), the two or more Zs may be the same or different from each other;
• p, q, and r are numbers of the monovalent substituent Z, p and q each independently represent an integer of 0 to 3, r represents an integer of 0 to 2, and when two or more ps are present in the formula (1-1), the two or more ps may be the same or different from each other, and when two or more qs are present in the formula (1-1), the two or more qs may be the same or different from each other, and when two or more rs are present in the formulae (1-2) and (1-3), the two or more rs may be the same or different from each other,
• or a divalent linking group other than the formulae (1-1), (1-2), and (1-3), provided that at least one of A1 is a divalent linking group represented by the formula (1-1), (1-2), or (1-3);
• A represents a divalent linking group obtained by removing two carboxy groups from a saturated aliphatic dicarboxylic acid compound, a divalent linking group obtained by removing two carboxy groups from an aromatic dicarboxylic acid compound, or a divalent linking group other than a divalent linking group obtained by removing two carboxy groups from a saturated aliphatic dicarboxylic acid compound or a divalent linking group obtained by removing two carboxy groups from an aromatic dicarboxylic acid compound, and when two or more A2s are present, the two or more A2s may be the same or different from each other;
• A3 represents a hydrogen atom or a methyl group;
• and n is an average value of the repeating unit numbers, and is a real number within a range of 1≤n≤9).