Using SCCS, CCOC(=O)C(CCC(=O)CCCCc1ccc2c(n1)NCCC2)c1cnc(OC)nc1 to produce CCOC(=O)C(CCC1(CCCCc2ccc3c(n2)NCCC3)SCCS1)c1cnc(OC)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.