A method of inactivating enveloped virus comprises contacting said virus with a virucidally effective amount of a composition comprising a C1 to C3 monohydroxy alcohol or a C3 to C4 diol and a sufficient amount of an acid to adjust the pH of the composition to below 4. Thus, a die-bonding film having a high reliability is provided by which a sufficient adhering strength and an elastic modulus at a high temperature can be obtained before and after curing; the workability is good; air bubbles do not stay at the boundary between the die-bonding film and the adherend; and the die-bonding film can withstand a humidity resistance solder reflow test. In a storage configuration, the insert member is removed from the connector and slid and latched into an interior space of the hollow member. The tissue is then exposed to the confluent, contiguous laser light beam and allowed to recover for thirty days before administering medication to which the tissue was unresponsive.