Using O=CCc1ccc2c(c1)CCOC2=O, CC(C)(C)OC(=O)N1CCNCC1 to produce CC(C)(C)OC(=O)N1CCN(CCc2ccc3c(c2)CCOC3=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.