Microsoft VBScript compilation error '800a0408'

Invalid character

/meetings/2017AM/MeetingRegistration.asp, line 182

"case when c.cst_phn_number_complete_dn like '%(%' then substring(c.cst_phn_number_complete_dn, CHARINDEX('(',c.cst_phn_number_complete_dn)+1, "&_ "CHARINDEX(')',c.cst_phn_number_complete_dn)-CHARINDEX('(',c.cst_phn_number_complete_dn)-1) "&_
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