Using CC1CN(CCc2ccc3c(c2)CC(C)OC3=O)CCN1, O=C(O)Cc1ccc(-n2cnnn2)cc1 to produce CC1Cc2cc(CCN3CCN(C(=O)Cc4ccc(-n5cnnn5)cc4)C(C)C3)ccc2C(=O)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.