Using CC(C)(C)OC(=O)N1CCC(NC(=O)c2cnc(OC3CCN(c4ccc(C(F)(F)F)cc4)CC3)cn2)CC1 to produce O=C(NC1CCNCC1)c1cnc(OC2CCN(c3ccc(C(F)(F)F)cc3)CC2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.