Compound and use thereof

A compound represented by the following formula (1) or (2):

• wherein in the formulae (1) and (2), each R1 independently represents a C1 to C8 alkyl group (which may have a nitrogen atom, an oxygen atom, or a sulfur atom as a heteroatom), or a hydrogen atom;
• each R2 independently represents a C1 to C8 alkyl group (which may have a nitrogen atom, an oxygen atom, or a sulfur atom as a heteroatom), a halogen atom, a nitro group, a carboxyl group, an amino group, or a hydrogen atom;
• each R3 and each R4 independently represent a C1 to C8 alkyl group (which may have a nitrogen atom, an oxygen atom, or a sulfur atom as a heteroatom), an allyl group, an aryl group, or a hydrogen atom;
• each R5 and each R6 independently represent a C1 to C8 alkyl group (which may have a nitrogen atom, an oxygen atom, or a sulfur atom as a heteroatom), an allyl group, a halogen atom, or a hydrogen atom;
• and R3 and R5, and/or R4 and R6 may be bound to each other to form a ring, and in the formula (2), each R7 independently represents a C1 to C8 alkyl group (which may have a nitrogen atom, an oxygen atom, or a sulfur atom as a heteroatom), an amino group, an amide group which may have a protective group or a substituent, a halogen atom, or a hydrogen atom;
• and R1 and R7 may be bound to each other to form a ring.