What effect is on the guitar at the beginning of Mary Jane by the Vines?

I think it might be chorus but it doesnt sound like any chorus sound I've been able to get.
Fender Mexi. Strat w/ Lace Sensor Golds
Schecter C-1 Classic
Breedlove AD-25 SR Plus

GCB-95 Crybaby
Boss CH-1 Super Chorus
Boss DD-20 Gigadelay
EH LPB-1 Boost
Boss TU-2 Tuner

Peavey Valveking 112
with Eminence Private Jack Speaker