Using CCOC(=O)C[C@H](NC(=O)CCCCc1ccc2c(n1)NCCC2)c1cccnc1 to produce O=C(O)C[C@H](NC(=O)CCCCc1ccc2c(n1)NCCC2)c1cccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.