Using CCOC(=O)C[C@@H](c1ccc2c(c1)OCC2)N1CCCN(CCCc2ccc3c(n2)NCCC3)C1=O to produce O=C(O)C[C@@H](c1ccc2c(c1)OCC2)N1CCCN(CCCc2ccc3c(n2)NCCC3)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.